Product details:
Save a trip to the hardware store by keeping SAE and METRIC Bolt Gauges on hand. They're easy to use and allow you to quickly check sizes making them ideal for anyone who uses fasteners. The heavy duty USA mold keeps nuts and bolts in place for convenience. This thread checking gauge includes a large variety of SAE and Metric sizes.SAE and METRIC Bolt Gauges Check a Thread Nut Fastener