Precise and Solid Construction - This bolt thread gauge is made of sturdy plastic and the plastic is reinforced with a good thickness (about 4mm) that will not break easily, durable performance, solid construction and text . For easy reading, surface, no burrs, will not hurt hands. DESIGN IN : This bolt and nut identifier gauge has holes for measuring bolts and dowels on the sides for nuts, both imperial and metric, and the embossed thread profile on the back to identify thread pitches. It has easy to read markings and has built-in holes for hanging on the wall. The bright color will make it stand out in your workshop or garage and help you find it faster. COMPACT & LIGHTWEIGHT - The nut and bolt gauge measures 3.3" x 8.7" and weighs only 2 ounces, takes up little space, fits perfectly in most portable tool boxes and can also be easily mounted on a bench. or wall so that it is not easy to get lost, a must have for your garage and workshop, a good bolt measuring tool to store in the toolbox. Checker Size Gauge Measure Thread Nut Bolt Screw: Excellent tool for quickly sorting bolts and nuts a simple way, save the time needed to find the right bolt size and corresponding nut for your project, also excellent for measuring hardware before you. Take a trip to the hardware store without having to bring to the store, a must have for your tool box, also a gift for DIY hobbyists or for dad. What You Get - Nut & Bolt Gauge Metric Tool & Standard Gauge. Size in inches: including #4, #5, #6, #8, #10, 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 3/4; Metric Size: including M3, , M5, M6, M7, M8, M10, , M14, M16, , M20, M22; Size: Nut: #6, #8, #10, 1/2, 1/4, 3/8, 5/8, 5/16, 7/16, 9/16, Weight: 0.12345886672 pounds, Manufacturer: Rtxbvg