Features: 1Nut and Bolt Measuring Tool Set: Our nut and bolt checker set includes assortment of 44 nut and bolt size checker gauges for measuring thread pitch. Use the detachable nut and bolt gauges to check, identify and verify nut and bolt size. 2Detachable Thread Gauges in Case: The biggest highlight is that you can take out any wanted pieces to do a fast thread identification. More handy to use than all thread checks on a cable or on board, which means that when you have to do thread size check on some equipment or on some hard to reach area, you do not need to spin a bulky gauge set around. 3Portable and Storable: Nut and bolt thread checker are accommodated by a compact and handy box case, guages are insert in with size markings, allowing you get the size you want easily and quickly. Silver for inch size. Black for metric size. 4Quick Identification and Time Saver: Just screw the nut or bolt onto thread gauge. Only take seconds to check the size. You can easily and quickly check correct size of the nuts and bolts and replace the snapped, loose, rusted or old ones at home or garage by yourself, no need to run towards hardware store for size check any more, greatly improving your work efficiency. 5Get Your Mixed Nuts and Bolts Well Classified: Mostly frequent used in daily mechanical work or home project, which can help you quickly sort out your mixed nuts bolts and get them well classified and organized in your compartment case from misplace, mess and loss. A perfect nut and bolt gauge for personal use or gifted to family or friends who loves tinking or DIY. Specification: Item Type: Nut and Bolt Thread CheckerMaterial: SteelWeight: Approx. 1310.00g / 46.21ozBlack Metric: M3x0.5, M4x0.7, M5x0.8, M6x1.0, M7x1.0, M8x1.0, M8x1.25, M10x1.0, M10x1.25, M10x1.5, M12x1.25, M12x1.5, M12x1.75, M14x1.5, M14x2.0, M16x1.5, M16x2.0, M20x1.5, M20x2.5, M24x2.0, M24x3.0Silver Inch: 6-32, 6-40, 8-32, 10-24, 10-32, 1/4-20, 1/4-28, 5/16-18, 5/16-24, 3/8-16, 3/8-24, 7/16-14, 7/16-20, 1/2-13, 1/2-20, 9/16-12, 9/16-18, 5/8-11, 5/8-18, 3/4-10, 3/4-16, 1-8, 1-12 Package List: 44 x Nut and Bolt Thread Checker1 x Storage Case