Product: Nut and Bolt Thread Checker (Complete SAE/Inch and Metric Set) (Packs)
Brand: Thread Checker
Color: Original version
23 of the most common SAE and 21 of the most common metric sizes, see description
Each included size has a nut and bolt checker on the same gauge.
Thread sizes are permanently stamped on each gauge.

Search query: thread pitch gauge
Relevance: Substitute