[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 Durable 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 will assist you in quickly and easily identifying the size of your bolts and nuts [Pre-drilled Mounting Holes]Our Nut and Bolt Thread Checker is designed with pre-drilled mounting holes on the top, making it easy to hang it on the wall 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 mechanic or an enthusiastic DIYer, you don't need to go to the hardware store for comparison, this bolt and nut checker plate can help you quickly and accurately compare the exact size; and it won'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 Thread Checker 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.