Core Bit Finder
Select your drill. CoringSpec loads thread, adapters, and capacity automatically. Results use the same compatibility engine as drill pages: VERIFIED FIT, SPEC-MATCHED, ADAPTER REQUIRED, with reasons shown.
Bit Finder returns bit family + matching diameter variants for the selected drill, not 70 SEO product pages. Engine: CoringSpec_Decision.
Selected drill
BLUEROCK 4Z1 Specs, Capacity and Compatible Core Bits
- Thread / spindle: 1-1/4"-7 UNC
- Handheld max: 4"
- Stand max: 4"
- Wet / dry: Yes / Yes
- RPM / gears (manufacturer/OEM): Gear 2: 2100 rpm for 1", 2" bits; Gear 1: 950 rpm for 2", 4" bits (BLUEROCK 4Z1 OM)
Compatible bits (22 variants shown)
BLUEROCK Wet · 4" variant
VERIFIED FITVerified Fit, VERIFIED FIT ✅
- Family: Wet
- Matching diameter variant: 4"
- Connection: 1-1/4"-7 UNC Female
- Working depth: 14.5"
- Material / reinforcement: MEDIUM
- Wet / dry: Wet
- RPM status: Manufacturer/OEM RPM on bit record, RPM data incomplete (calculator guidance is separate)
- Fit path: Direct fit with selected drill (no adapter in this evaluation)
- Evidence confidence: OEM Documented
Compatibility detail
| Drill connection | Direct 1-1/4"-7 UNC Female |
|---|---|
| Diameter | 4" |
| Drill capacity | Within 4" |
| Material | See bit record |
| Reinforcement | Manufacturer Specified |
| Method | Wet |
| Working depth | Confirm on bit record |
| OEM pairing | Verified |
| RPM | UNKNOWN |
Limitation: This bit requires wet drilling even though your drill also supports dry operation.
BLUEROCK Dry · 4" variant
ADAPTER REQUIREDAdapter Required, ADAPTER REQUIRED 🟠
- Family: Dry
- Matching diameter variant: 4"
- Connection: 5/8"-11 UNC
- Working depth: 10"
- Material / reinforcement: Not specified
- Wet / dry: Dry
- RPM status: Manufacturer/OEM RPM on bit record, RPM data incomplete (calculator guidance is separate)
- Adapter requirement: bluerock-adapter-model-2 (with selected drill)
- Evidence confidence: OEM Documented
Compatibility detail
| Drill connection | Adapter: bluerock-adapter-model-2 |
|---|---|
| Diameter | 4" |
| Drill capacity | Within 4" |
| Material | See bit record |
| Reinforcement | Not specified |
| Method | Dry |
| Working depth | Confirm on bit record |
| OEM pairing | Verified |
| RPM | UNKNOWN |
EDiamondTools Wet Premium (WBP A4) · 4" variant
SPEC MATCHEDBest Spec Match, SPEC-MATCHED 🟡
- Family: Wet Premium (WBP A4)
- Matching diameter variant: 4"
- Connection: 1-1/4"-7 UNC Female
- Working depth: 14"
- Material / reinforcement: LIGHT
- Wet / dry: Wet
- RPM status: Manufacturer/OEM RPM on bit record, RPM data incomplete (calculator guidance is separate)
- Fit path: Direct fit with selected drill (no adapter in this evaluation)
- Evidence confidence: MEDIUM
Compatibility detail
| Drill connection | Direct 1-1/4"-7 UNC Female |
|---|---|
| Diameter | 4" |
| Drill capacity | Within 4" |
| Material | See bit record |
| Reinforcement | LIGHT |
| Method | Wet |
| Working depth | Confirm on bit record |
| OEM pairing | Not explicitly documented |
| RPM | UNKNOWN |
Limitation: This bit requires wet drilling even though your drill also supports dry operation.
Limitation: Specifications align, but this drill/bit pairing is not explicitly documented by the manufacturers.
Milwaukee Diamond Ultra Dry · 4" variant
SPEC MATCHEDBest Spec Match, SPEC-MATCHED 🟡
- Family: Diamond Ultra Dry
- Matching diameter variant: 4"
- Connection: 1-1/4"-7 UNC
- Working depth: 13"
- Material / reinforcement: LIGHT
- Wet / dry: Dry
- RPM status: Manufacturer/OEM RPM on bit record, RPM data incomplete (calculator guidance is separate)
- Fit path: Direct fit with selected drill (no adapter in this evaluation)
- Evidence confidence: MEDIUM
Compatibility detail
| Drill connection | Direct 1-1/4"-7 UNC |
|---|---|
| Diameter | 4" |
| Drill capacity | Within 4" |
| Material | See bit record |
| Reinforcement | LIGHT |
| Method | Dry |
| Working depth | Confirm on bit record |
| OEM pairing | Not explicitly documented |
| RPM | Review required |
Limitation: Specifications align, but this drill/bit pairing is not explicitly documented by the manufacturers.
BLUEROCK BLUEROCK BLUEROCK Supreme High Speed Wet Core Bits 4″ · 4" variant
SPEC MATCHEDBest Spec Match, SPEC-MATCHED 🟡
- Family: BLUEROCK BLUEROCK Supreme High Speed Wet Core Bits 4″
- Matching diameter variant: 4"
- Connection: 1-1/4"-7 UNC Female
- Working depth: 17"
- Material / reinforcement: MEDIUM
- Wet / dry: Wet
- RPM status: Manufacturer/OEM RPM on bit record, RPM data incomplete (calculator guidance is separate)
- Fit path: Direct fit with selected drill (no adapter in this evaluation)
- Evidence confidence: LOW
Compatibility detail
| Drill connection | Direct 1-1/4"-7 UNC Female |
|---|---|
| Diameter | 4" |
| Drill capacity | Within 4" |
| Material | See bit record |
| Reinforcement | Manufacturer Specified |
| Method | Wet |
| Working depth | Confirm on bit record |
| OEM pairing | Not explicitly documented |
| RPM | UNKNOWN |
Limitation: This bit requires wet drilling even though your drill also supports dry operation.
Limitation: Specifications align, but this drill/bit pairing is not explicitly documented by the manufacturers.
Cardi Cardi Cardi Professional Wet Core Bits 4″ · 4" variant
SPEC MATCHEDBest Spec Match, SPEC-MATCHED 🟡
- Family: Cardi Cardi Professional Wet Core Bits 4″
- Matching diameter variant: 4"
- Connection: 1-1/4"-7 UNC Female
- Working depth: 17.7"
- Material / reinforcement: MEDIUM
- Wet / dry: Wet
- RPM status: Manufacturer/OEM RPM on bit record, RPM data incomplete (calculator guidance is separate)
- Fit path: Direct fit with selected drill (no adapter in this evaluation)
- Evidence confidence: LOW
Compatibility detail
| Drill connection | Direct 1-1/4"-7 UNC Female |
|---|---|
| Diameter | 4" |
| Drill capacity | Within 4" |
| Material | See bit record |
| Reinforcement | Manufacturer Specified |
| Method | Wet |
| Working depth | Confirm on bit record |
| OEM pairing | Not explicitly documented |
| RPM | UNKNOWN |
Limitation: This bit requires wet drilling even though your drill also supports dry operation.
Limitation: Specifications align, but this drill/bit pairing is not explicitly documented by the manufacturers.
CS Unitec CS Unitec CS Unitec Premium Wet Core Bits 4″ · 4" variant
SPEC MATCHEDBest Spec Match, SPEC-MATCHED 🟡
- Family: CS Unitec CS Unitec Premium Wet Core Bits 4″
- Matching diameter variant: 4"
- Connection: 1-1/4"-7 UNC Female
- Working depth: 18"
- Material / reinforcement: MEDIUM
- Wet / dry: Wet
- RPM status: Manufacturer/OEM RPM on bit record, RPM data incomplete (calculator guidance is separate)
- Fit path: Direct fit with selected drill (no adapter in this evaluation)
- Evidence confidence: LOW
Compatibility detail
| Drill connection | Direct 1-1/4"-7 UNC Female |
|---|---|
| Diameter | 4" |
| Drill capacity | Within 4" |
| Material | See bit record |
| Reinforcement | Manufacturer Specified |
| Method | Wet |
| Working depth | Confirm on bit record |
| OEM pairing | Not explicitly documented |
| RPM | UNKNOWN |
Limitation: This bit requires wet drilling even though your drill also supports dry operation.
Limitation: Specifications align, but this drill/bit pairing is not explicitly documented by the manufacturers.
Diamond Products Diamond Products Core Bore Premium Black Wet Core Bits 4″ · 4" variant
SPEC MATCHEDBest Spec Match, SPEC-MATCHED 🟡
- Family: Diamond Products Core Bore Premium Black Wet Core Bits 4″
- Matching diameter variant: 4"
- Connection: 1-1/4"-7 UNC Female
- Working depth: 14"
- Material / reinforcement: HEAVY
- Wet / dry: Wet
- RPM status: Manufacturer/OEM RPM on bit record, RPM data incomplete (calculator guidance is separate)
- Fit path: Direct fit with selected drill (no adapter in this evaluation)
- Evidence confidence: LOW
Compatibility detail
| Drill connection | Direct 1-1/4"-7 UNC Female |
|---|---|
| Diameter | 4" |
| Drill capacity | Within 4" |
| Material | See bit record |
| Reinforcement | HEAVY |
| Method | Wet |
| Working depth | Confirm on bit record |
| OEM pairing | Not explicitly documented |
| RPM | UNKNOWN |
Limitation: This bit requires wet drilling even though your drill also supports dry operation.
Limitation: Specifications align, but this drill/bit pairing is not explicitly documented by the manufacturers.
Diamond Products Diamond Products Heavy Duty Orange Wet Core Bits 4″ · 4" variant
SPEC MATCHEDBest Spec Match, SPEC-MATCHED 🟡
- Family: Diamond Products Heavy Duty Orange Wet Core Bits 4″
- Matching diameter variant: 4"
- Connection: 1-1/4"-7 UNC Female
- Working depth: 14"
- Material / reinforcement: MEDIUM
- Wet / dry: Wet
- RPM status: Manufacturer/OEM RPM on bit record, RPM data incomplete (calculator guidance is separate)
- Fit path: Direct fit with selected drill (no adapter in this evaluation)
- Evidence confidence: LOW
Compatibility detail
| Drill connection | Direct 1-1/4"-7 UNC Female |
|---|---|
| Diameter | 4" |
| Drill capacity | Within 4" |
| Material | See bit record |
| Reinforcement | Manufacturer Specified |
| Method | Wet |
| Working depth | Confirm on bit record |
| OEM pairing | Not explicitly documented |
| RPM | UNKNOWN |
Limitation: This bit requires wet drilling even though your drill also supports dry operation.
Limitation: Specifications align, but this drill/bit pairing is not explicitly documented by the manufacturers.
EDiamondTools EDiamondTools Heavy-Duty Asphalt & Green Concrete Core Bits 4″ · 4" variant
SPEC MATCHEDBest Spec Match, SPEC-MATCHED 🟡
- Family: EDiamondTools Heavy-Duty Asphalt & Green Concrete Core Bits 4″
- Matching diameter variant: 4"
- Connection: 1-1/4"-7 UNC Female
- Working depth: 14"
- Material / reinforcement: Non-reinforced (abrasive)
- Wet / dry: Wet
- RPM status: Manufacturer/OEM RPM on bit record, RPM data incomplete (calculator guidance is separate)
- Fit path: Direct fit with selected drill (no adapter in this evaluation)
- Evidence confidence: LOW
Compatibility detail
| Drill connection | Direct 1-1/4"-7 UNC Female |
|---|---|
| Diameter | 4" |
| Drill capacity | Within 4" |
| Material | See bit record |
| Reinforcement | Not specified |
| Method | Wet |
| Working depth | Confirm on bit record |
| OEM pairing | Not explicitly documented |
| RPM | UNKNOWN |
Limitation: This bit requires wet drilling even though your drill also supports dry operation.
Limitation: Specifications align, but this drill/bit pairing is not explicitly documented by the manufacturers.
Hilti Hilti SPX-L Heavy Rebar Wet Core Bits 4″ · 4" variant
SPEC MATCHEDBest Spec Match, SPEC-MATCHED 🟡
- Family: Hilti SPX-L Heavy Rebar Wet Core Bits 4″
- Matching diameter variant: 4"
- Connection: Hilti BL Quick-Release / 1-1/4"-7 UNC
- Working depth: 17.7"
- Material / reinforcement: HEAVY
- Wet / dry: Wet
- RPM status: Manufacturer/OEM RPM on bit record, RPM data incomplete (calculator guidance is separate)
- Fit path: Direct fit with selected drill (no adapter in this evaluation)
- Evidence confidence: LOW
Compatibility detail
| Drill connection | Direct Hilti BL Quick-Release / 1-1/4"-7 UNC |
|---|---|
| Diameter | 4" |
| Drill capacity | Within 4" |
| Material | See bit record |
| Reinforcement | HEAVY |
| Method | Wet |
| Working depth | Confirm on bit record |
| OEM pairing | Not explicitly documented |
| RPM | UNKNOWN |
Limitation: This bit requires wet drilling even though your drill also supports dry operation.
Limitation: Specifications align, but this drill/bit pairing is not explicitly documented by the manufacturers.
Husqvarna Husqvarna D1200 Diagrip Universal Wet Core Bits 4″ · 4" variant
SPEC MATCHEDBest Spec Match, SPEC-MATCHED 🟡
- Family: Husqvarna D1200 Diagrip Universal Wet Core Bits 4″
- Matching diameter variant: 4"
- Connection: 1-1/4"-7 UNC Female
- Working depth: 18"
- Material / reinforcement: MEDIUM
- Wet / dry: Wet
- RPM status: Manufacturer/OEM RPM on bit record, RPM data incomplete (calculator guidance is separate)
- Fit path: Direct fit with selected drill (no adapter in this evaluation)
- Evidence confidence: LOW
Compatibility detail
| Drill connection | Direct 1-1/4"-7 UNC Female |
|---|---|
| Diameter | 4" |
| Drill capacity | Within 4" |
| Material | See bit record |
| Reinforcement | Manufacturer Specified |
| Method | Wet |
| Working depth | Confirm on bit record |
| OEM pairing | Not explicitly documented |
| RPM | UNKNOWN |
Limitation: This bit requires wet drilling even though your drill also supports dry operation.
Limitation: Specifications align, but this drill/bit pairing is not explicitly documented by the manufacturers.
Husqvarna D1610 · 4" variant
SPEC MATCHEDBest Spec Match, SPEC-MATCHED 🟡
- Family: D1610
- Matching diameter variant: 4"
- Connection: 1-1/4"-7 UNC Female
- Working depth: 14"
- Material / reinforcement: MEDIUM
- Wet / dry: Wet
- RPM status: Manufacturer/OEM RPM on bit record, RPM data incomplete (calculator guidance is separate)
- Fit path: Direct fit with selected drill (no adapter in this evaluation)
- Evidence confidence: OEM Documented
Compatibility detail
| Drill connection | Direct 1-1/4"-7 UNC Female |
|---|---|
| Diameter | 4" |
| Drill capacity | Within 4" |
| Material | See bit record |
| Reinforcement | Manufacturer Specified |
| Method | Wet |
| Working depth | Confirm on bit record |
| OEM pairing | Not explicitly documented |
| RPM | UNKNOWN |
Limitation: This bit requires wet drilling even though your drill also supports dry operation.
Limitation: Specifications align, but this drill/bit pairing is not explicitly documented by the manufacturers.
Husqvarna Husqvarna Elite-Drill D1410 High-Speed Wet Core Bits 4″ · 4" variant
SPEC MATCHEDBest Spec Match, SPEC-MATCHED 🟡
- Family: Husqvarna Elite-Drill D1410 High-Speed Wet Core Bits 4″
- Matching diameter variant: 4"
- Connection: 1-1/4"-7 UNC Female
- Working depth: 18"
- Material / reinforcement: HEAVY
- Wet / dry: Wet
- RPM status: Manufacturer/OEM RPM on bit record, RPM data incomplete (calculator guidance is separate)
- Fit path: Direct fit with selected drill (no adapter in this evaluation)
- Evidence confidence: LOW
Compatibility detail
| Drill connection | Direct 1-1/4"-7 UNC Female |
|---|---|
| Diameter | 4" |
| Drill capacity | Within 4" |
| Material | See bit record |
| Reinforcement | HEAVY |
| Method | Wet |
| Working depth | Confirm on bit record |
| OEM pairing | Not explicitly documented |
| RPM | UNKNOWN |
Limitation: This bit requires wet drilling even though your drill also supports dry operation.
Limitation: Specifications align, but this drill/bit pairing is not explicitly documented by the manufacturers.
Husqvarna Husqvarna Tacti-Drill D35 Wet Core Bits 4″ · 4" variant
SPEC MATCHEDBest Spec Match, SPEC-MATCHED 🟡
- Family: Husqvarna Tacti-Drill D35 Wet Core Bits 4″
- Matching diameter variant: 4"
- Connection: 1-1/4"-7 UNC Female
- Working depth: 14"
- Material / reinforcement: LIGHT
- Wet / dry: Wet
- RPM status: Manufacturer/OEM RPM on bit record, RPM data incomplete (calculator guidance is separate)
- Fit path: Direct fit with selected drill (no adapter in this evaluation)
- Evidence confidence: LOW
Compatibility detail
| Drill connection | Direct 1-1/4"-7 UNC Female |
|---|---|
| Diameter | 4" |
| Drill capacity | Within 4" |
| Material | See bit record |
| Reinforcement | LIGHT |
| Method | Wet |
| Working depth | Confirm on bit record |
| OEM pairing | Not explicitly documented |
| RPM | UNKNOWN |
Limitation: This bit requires wet drilling even though your drill also supports dry operation.
Limitation: Specifications align, but this drill/bit pairing is not explicitly documented by the manufacturers.
Husqvarna VARI-DRILL B80 · 4" variant
SPEC MATCHEDBest Spec Match, SPEC-MATCHED 🟡
- Family: VARI-DRILL B80
- Matching diameter variant: 4"
- Connection: 1-1/4"-7 UNC Female
- Working depth: 14"
- Material / reinforcement: Not specified
- Wet / dry: Wet
- RPM status: Manufacturer/OEM RPM on bit record, RPM data incomplete (calculator guidance is separate)
- Fit path: Direct fit with selected drill (no adapter in this evaluation)
- Evidence confidence: MEDIUM
Compatibility detail
| Drill connection | Direct 1-1/4"-7 UNC Female |
|---|---|
| Diameter | 4" |
| Drill capacity | Within 4" |
| Material | See bit record |
| Reinforcement | Not specified |
| Method | Wet |
| Working depth | Confirm on bit record |
| OEM pairing | Not explicitly documented |
| RPM | UNKNOWN |
Limitation: This bit requires wet drilling even though your drill also supports dry operation.
Limitation: Specifications align, but this drill/bit pairing is not explicitly documented by the manufacturers.
Husqvarna Husqvarna VARI-DRILL Dry D20 Core Bits 4″ · 4" variant
SPEC MATCHEDBest Spec Match, SPEC-MATCHED 🟡
- Family: Husqvarna VARI-DRILL Dry D20 Core Bits 4″
- Matching diameter variant: 4"
- Connection: 5/8"-11 UNC & 1-1/4"-7 UNC
- Working depth: 12"
- Material / reinforcement: LIGHT
- Wet / dry: Dry
- RPM status: Manufacturer/OEM RPM on bit record, RPM data incomplete (calculator guidance is separate)
- Fit path: Direct fit with selected drill (no adapter in this evaluation)
- Evidence confidence: LOW
Compatibility detail
| Drill connection | Direct 5/8"-11 UNC & 1-1/4"-7 UNC |
|---|---|
| Diameter | 4" |
| Drill capacity | Within 4" |
| Material | See bit record |
| Reinforcement | LIGHT |
| Method | Dry |
| Working depth | Confirm on bit record |
| OEM pairing | Not explicitly documented |
| RPM | UNKNOWN |
Limitation: Specifications align, but this drill/bit pairing is not explicitly documented by the manufacturers.
Milwaukee Milwaukee Milwaukee MX FUEL High-Output Wet Core Bits 4″ · 4" variant
SPEC MATCHEDBest Spec Match, SPEC-MATCHED 🟡
- Family: Milwaukee Milwaukee MX FUEL High-Output Wet Core Bits 4″
- Matching diameter variant: 4"
- Connection: 1-1/4"-7 UNC Female
- Working depth: 14"
- Material / reinforcement: HEAVY
- Wet / dry: Wet
- RPM status: Manufacturer/OEM RPM on bit record, RPM data incomplete (calculator guidance is separate)
- Fit path: Direct fit with selected drill (no adapter in this evaluation)
- Evidence confidence: LOW
Compatibility detail
| Drill connection | Direct 1-1/4"-7 UNC Female |
|---|---|
| Diameter | 4" |
| Drill capacity | Within 4" |
| Material | See bit record |
| Reinforcement | HEAVY |
| Method | Wet |
| Working depth | Confirm on bit record |
| OEM pairing | Not explicitly documented |
| RPM | UNKNOWN |
Limitation: This bit requires wet drilling even though your drill also supports dry operation.
Limitation: Specifications align, but this drill/bit pairing is not explicitly documented by the manufacturers.
Shibuya Shibuya Shibuya Blue Bit Heavy Rebar Wet Core Bits 4″ · 4" variant
SPEC MATCHEDBest Spec Match, SPEC-MATCHED 🟡
- Family: Shibuya Shibuya Blue Bit Heavy Rebar Wet Core Bits 4″
- Matching diameter variant: 4"
- Connection: 1-1/4"-7 UNC & A-Rod
- Working depth: 14"
- Material / reinforcement: HEAVY
- Wet / dry: Wet
- RPM status: Manufacturer/OEM RPM on bit record, RPM data incomplete (calculator guidance is separate)
- Fit path: Direct fit with selected drill (no adapter in this evaluation)
- Evidence confidence: LOW
Compatibility detail
| Drill connection | Direct 1-1/4"-7 UNC & A-Rod |
|---|---|
| Diameter | 4" |
| Drill capacity | Within 4" |
| Material | See bit record |
| Reinforcement | HEAVY |
| Method | Wet |
| Working depth | Confirm on bit record |
| OEM pairing | Not explicitly documented |
| RPM | UNKNOWN |
Limitation: This bit requires wet drilling even though your drill also supports dry operation.
Limitation: Specifications align, but this drill/bit pairing is not explicitly documented by the manufacturers.
Shibuya Shibuya Shibuya Gold Bit Hard Aggregate Wet Core Bits 4″ · 4" variant
SPEC MATCHEDBest Spec Match, SPEC-MATCHED 🟡
- Family: Shibuya Shibuya Gold Bit Hard Aggregate Wet Core Bits 4″
- Matching diameter variant: 4"
- Connection: 1-1/4"-7 UNC & A-Rod
- Working depth: 14"
- Material / reinforcement: MEDIUM
- Wet / dry: Wet
- RPM status: Manufacturer/OEM RPM on bit record, RPM data incomplete (calculator guidance is separate)
- Fit path: Direct fit with selected drill (no adapter in this evaluation)
- Evidence confidence: LOW
Compatibility detail
| Drill connection | Direct 1-1/4"-7 UNC & A-Rod |
|---|---|
| Diameter | 4" |
| Drill capacity | Within 4" |
| Material | See bit record |
| Reinforcement | Manufacturer Specified |
| Method | Wet |
| Working depth | Confirm on bit record |
| OEM pairing | Not explicitly documented |
| RPM | UNKNOWN |
Limitation: This bit requires wet drilling even though your drill also supports dry operation.
Limitation: Specifications align, but this drill/bit pairing is not explicitly documented by the manufacturers.
VEVOR Wet Core Bit · 4" variant
SPEC MATCHEDBest Spec Match, SPEC-MATCHED 🟡
- Family: Wet Core Bit
- Matching diameter variant: 4"
- Connection: 1-1/4"-7 UNC Female
- Working depth: 14"
- Material / reinforcement: MEDIUM
- Wet / dry: Wet
- RPM status: Manufacturer/OEM RPM on bit record, RPM data incomplete (calculator guidance is separate)
- Fit path: Direct fit with selected drill (no adapter in this evaluation)
- Evidence confidence: LOW
Compatibility detail
| Drill connection | Direct 1-1/4"-7 UNC Female |
|---|---|
| Diameter | 4" |
| Drill capacity | Within 4" |
| Material | See bit record |
| Reinforcement | Manufacturer Specified |
| Method | Wet |
| Working depth | Confirm on bit record |
| OEM pairing | Not explicitly documented |
| RPM | UNKNOWN |
Limitation: This bit requires wet drilling even though your drill also supports dry operation.
Limitation: Specifications align, but this drill/bit pairing is not explicitly documented by the manufacturers.
Weka Weka Weka German Wet Core Bits 4″ · 4" variant
SPEC MATCHEDBest Spec Match, SPEC-MATCHED 🟡
- Family: Weka Weka German Wet Core Bits 4″
- Matching diameter variant: 4"
- Connection: 1-1/4"-7 UNC Female
- Working depth: 18"
- Material / reinforcement: MEDIUM
- Wet / dry: Wet
- RPM status: Manufacturer/OEM RPM on bit record, RPM data incomplete (calculator guidance is separate)
- Fit path: Direct fit with selected drill (no adapter in this evaluation)
- Evidence confidence: LOW
Compatibility detail
| Drill connection | Direct 1-1/4"-7 UNC Female |
|---|---|
| Diameter | 4" |
| Drill capacity | Within 4" |
| Material | See bit record |
| Reinforcement | Manufacturer Specified |
| Method | Wet |
| Working depth | Confirm on bit record |
| OEM pairing | Not explicitly documented |
| RPM | UNKNOWN |
Limitation: This bit requires wet drilling even though your drill also supports dry operation.
Limitation: Specifications align, but this drill/bit pairing is not explicitly documented by the manufacturers.
Products for this page

Diamond core bit
VEVOR Wet Core Bit
5" shown · wet
Value wet coring 5" × 14" on handheld or stand drills with 1-1/4"-7 UNC.

Diamond core bit
BLUEROCK Wet
4" shown · wet
Wet concrete/masonry coring at 4" on 1-1/4"-7 UNC machines within capacity.

Diamond core bit
VEVOR Wet Core Bit Set
6" shown · wet
Value multi-size wet kit: 1, 2, 3, 4, 5, and 6" bits, universal 1-1/4"-7 UNC, 14" depth.

Diamond core bit
BLUEROCK Dry
4" shown · dry
Dry masonry/concrete coring at 4" on 5/8"-11 UNC path (adapter on Z1 1-1/4"-7 UNC spindles).
Paid links. Specs on this site come from manufacturer documentation, not from the retailer.