[Wide Range of Size Checking]Our Nut and Bolt Thread Detector can help you identify 34 hole distinct sizes of nuts and bolts, featuring metric thread sizes spanning , which can help you identify different sizes of nuts and bolts quickly and easil [Clear and Laser Scale]The Bult and nut gauge features laser-etched inch and centimeter scales on the edges, which are clear and easy to compare, and assist you in quickly and easily identifying the size of your bolts and nuts [Pre-drilled Mounting Holes]Our Nut and Bolt is designed with pre-drilled mounting holes on the top, making it easy to hang it when you're done using it or attach it to your toolbox for easy access when you need it [Meeting Your Needs]Whether you are a professional or an enthusiastic , you don't need to go to the for comparison, this bolt and nut checker plate can help you quickly and accurately compare the exact size; and it 't get tangled up like the previous coil-type identifiers, which affects the use Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:red Material:Aluminum alloy Package Contents: 1 x Nut and Bolt Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.