1、[Nut Bolt Screw Gauge] Quickly categorize bolts and nuts in a simple way, saving time to find the right size for your project. With a wall hanging hole for easy storing in your workshop or garage. 2、[Integrated Design] This nut and bolt size gauge features holes for measuring bolts, pins for both imperial and metric nuts, embossed thread profiles for identifying pitches. 3、[Sturdy Construction] This bolt gauge is made of heavy duty reinforced plastic, with about 5/32 inch thickness, sturdy and not easily cracked or broken, ensuring durability. 4、[Clear and Accurate Marking] The bolt sizer features clear and easy to read markings for quick measurement, smoothly without burrs, will not injury your hands. 5、[Compact and Lightweight] Bolt and nut gauge takes up minimal space, fits easily in most portable toolboxes and can be mounted on workbench or wall for easy access.