Nut and Bolt Thread Checker (Complete SAE/Inch and Metric Set)

Nut and Bolt Thread Checker (Complete SAE/Inch and Metric Set) (Packs) Color:Original version Nut and Bolt Thread Checker (Complete SAE/Inch and Metric Set) (Packs) Product Features 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.