The portable precise thread size checker keychain is an essential tool for anyone working with bolts and nuts. This compact device allows you to quickly and accurately identify the size of various bolts and threads, making it for on-the-go use. Simply to your keychain, and you'll always have a reliable thread gauge at your fingertips, ensuring you never struggle with bolts and nuts again. Features -Color:Silver -Material:Steel -Size: 13.00X2.80X1.00cm/5.11X1.10X0.39in -Portable design: the portable design of this thread size checker keychain makes it easy to carry around, ensuring you always have it on hand when needed -Keychain functionality: this tool doubles as a keychain, allowing you to to your keys for convenient access and storage -Precise measurement: engineered for precision, this tool accurately identifies thread sizes, helping you find the exact specifications you need -Timesaving efficiency: save valuable time by quickly determining the correct bolt and thread sizes without the need for multiple tools -Versatile use: ideal for both professional and personal use, this keychain tool is for mechanics, diy enthusiasts, and anyone needing quick measurements Package list: 1 thread gauge identifier