How we research
Source hierarchy:
- Official manufacturer manual
- Manufacturer product documentation
- Authorized technical documentation
- Marketplace-specific offer data (ASIN / kit contents only)
Specification conflicts: we record the conflict and prefer the higher source in the hierarchy. We do not invent a “compromise” number.
Verification dates: product records store when capacity/RPM/thread data was last checked against sources.
OEM compatibility vs spec-match: VERIFIED FIT means the manufacturer documents the pair; SPEC-MATCHED means connection and capacity align without an explicit OEM pairing claim.
Missing data: blank stays blank, labeled Unknown / Not specified. Tested vs researched is never blurred.
What VERIFIED and PARTIAL mean
VERIFIED: the exact model or variant identity is stable and the core fields needed for its public use, such as source, capacity, operating method, and interface, have been checked. VERIFIED does not mean CoringSpec physically tested it or guarantees every possible setup.
PARTIAL: the record is real but one or more decision-critical fields remain incomplete, conflicting, or insufficiently sourced. PARTIAL records can support research internally, but they do not pass a hard requirement or appear as a verified recommendation.
Field-by-field verification workflow
- Identify the exact brand, model, manufacturer number, and configuration.
- Capture each claim from its strongest available source rather than copying a marketplace title.
- Normalize units and connection labels without changing their technical meaning.
- Record source URLs, evidence state, and verification date with the product record.
- Run identity, range, and compatibility checks before the record can feed tables, finders, or guides.
- Recheck the rendered page and structured data after publication.
How conflicts and gaps are handled
| Evidence condition | Editorial treatment | What we do not do |
|---|---|---|
| Manual and product page agree | Store the value with the latest verified date | Repeat the same claim as extra evidence |
| Official sources conflict | Record the conflict and prefer the more specific, current document | Average or invent a compromise |
| Marketplace differs from official data | Use marketplace data only for that exact offer or kit | Overwrite the canonical model specification |
| Value is absent | Render Unknown or Not specified | Infer capability from a related model |
| Connection and limits align | May label a relationship SPEC-MATCHED | Call it OEM-approved without documentation |
Compatibility and reinforcement safeguards
A usable setup must pass every relevant constraint: exact model identity, bit connection, diameter, working depth, wet or dry drilling method, substrate, reinforcement rating, operating speed, and any required stand or adapter. One matching field never proves the whole setup.
Reinforcement marked Not specified remains unknown. We never convert a general concrete claim into reinforced-concrete or rebar eligibility.
Mode-specific capacity
Handheld maximum, stand-mounted maximum, and overall marketing capacity are separate fields. A large stand rating is never reused as a handheld rating. The selected operating mode must have its own documented capacity, and a missing mode-specific value cannot pass a diameter gate.
Facts, qualified inferences, and comparisons
A manufacturer-stated value is presented as a fact with its source. A qualified inference is labeled and limited to what the evidence supports, for example, a SPEC-MATCHED relationship after connection, diameter, method, and speed checks. Comparisons use the same fields and evidence rules for both sides; CoringSpec does not create an overall winner, performance score, or quality rating from unlike or missing data.
Manufacturer and marketplace evidence
Manufacturer sources define the canonical machine or bit specification. Marketplace evidence can establish the exact seller offer, ASIN, current kit contents, or included accessories, but it does not overwrite the model identity or prove a technical capability absent from manufacturer documentation.
Publication and correction controls
Before publication we check page identity, one visible H1, metadata uniqueness, internal destinations, structured-data type, and cached versus uncached output. Records are rechecked when a manufacturer revises a model, a conflict is reported, or an editorial review comes due. A correction updates the source record first, then every table, finder, comparison, and guide that uses it.
Affiliate independence and claims we prohibit
Affiliate links do not change inclusion, evidence status, or compatibility. We do not invent or hardcode prices, availability, reviews, star ratings, warranty terms, laboratory results, field tests, or personal-use claims. If CoringSpec has not physically tested a product, the page does not imply that it has.
Documentation standards: Manufacturer Technical Specifications, Verified Engineering Inferences, and Field Verified Testing only when genuine physical testing exists.
Limitations
CoringSpec is a technical research reference, not a substitute for the manufacturer manual, site-specific engineering, utility locating, anchoring design, electrical protection, dust control, or operator training. Specifications can change by market and configuration, so users should confirm the exact current model before work.