Features 1、Multifunctional: This bolt size gauge is a great tool for quickly sorting bolts and nuts in a simple way, saving the time necessary to find the right size bolt and matching nut for your project, it's also great for measuring hardware before you go to the hardware store without having to take one to the store with you. 2、Integrated Design: This bolt measuring tool features a integrated design with holes for measuring bolts, side pegs for imperial and metric nuts, embossed thread profiles on the back for pitch identification, easy to read markings, and built in holes for hanging on the wall, as well as a multitude of features. 3、Excellent ABS Material: This nut bolt thread gauge is made of excellent ABS material, which is reinforced, with good thickness (about 5/32 inches), not easy to break, long lasting performance, sturdy structure, clear text, easy to read, slick finish, no burrs, won't hurt your hand. 4、Compact And Lightweight: This bolt gauge is 3.3 inches wide, 8.7 inches long and weighs only 2 ounces, taking up very little space and fitting perfectly into most portable toolboxes, it can also be easily mounted on a workbench or wall, and will not easily get lost, making it a must have tool for garages and workshops, and can be kept in a toolbox! 5、Wide Application: This bolt size and thread gauge has a wide range of applications and can be used for machine building and repair, automotive repair and modification, carpentry and construction work, electronic and electrical work, home repair and more. Specification Item Type: Bolt Gauge Material: Plastic Features: Slick finish, no burrs, high precision, high hardness, stable performance, sturdy texture. Size: Inch Sizes: 4, 5, 6, 8, 10, 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 3/4 Metric Sizes: M3, M4, M5, M6, M7, M8, M10, M12, M14, M16, M18, M20, M22 Nut Sizes: 6, 8, 10, 1/2, 1/2, 1/ 4, 3/8, 5/8, 5/16, 7/16, 9/16 Package List 1 x Bolt Gauge