
Hex Gauge Set for SAE and common sizes that includes a black metal case with:
Heavy Hex Size Reference card
Heavy Hex Instructions for use
Two plastic Heavy Hex Gauges to identify the measurement of nut and bolts sizes. One gauge is inch and the second gauge has the Metric scale to identify standard nuts and bolts. A note from experience, plastic is ok if you are working on engines at ambient temperature. Don't buy the plastic version hot exhaust pipes or engines that are over 410°f or 210°c as the plastic will melt.
Inch and Metric Clear Card Thread Checkers. These are used as a thread checker to identify the standard thread pitches used on nuts and bolts as fine thread or coarse thread.