How We Test & Compile Our Compatibility Guides

ToolCompatibility exists to answer one question reliably: will this actually fit / work with that? Here’s how our editorial team gets to an answer we’re willing to publish.

1. We start from primary sources

Manufacturer specification sheets, official manuals, and published engineering standards come first. Retailer product listings are treated as leads to verify, not facts — they’re frequently wrong or copy-pasted.

2. We check the physical standards, not just the marketing

Compatibility usually comes down to measurable things: disc bore and diameter, arbor size, battery voltage and footprint, connector and shank type, thread pitch. We work from those numbers, because they don’t change with a rebrand.

3. We separate “fits” from “is safe and sensible”

A part fitting isn’t the same as it being the right choice. Where a combination is physically possible but risky, under-rated, or voids a warranty, we say so.

4. We flag uncertainty instead of guessing

If we can’t confirm a detail against a reliable source, the guide states that plainly rather than presenting a guess as fact.

5. We keep it current

Tool ranges get superseded. We re-verify our guides on a regular cycle and date-stamp every page with when the data was last checked.

6. Our recommendations and affiliate links

Some links on this site are affiliate links — if you buy through them we may earn a small commission, at no extra cost to you. As an Amazon Associate, we earn from qualifying purchases. It never changes which product we recommend. Picks are based on fitment and fitness for the job; the reasoning is always shown.

This page is for general information only. We work to keep details accurate, but specifications change — always confirm against the manufacturer’s current specification before buying or using a part. Found an error? Contact us.