44Pcs Nut and Bolt - Standard and Metric - Male Female Gauge - Accurate Measurements

[Accurate Nut and Bolt Checker]: The was designed to make your job easier and improve efficiency being a fast and simple way of verifying the thread of your bolts and nuts. An excellent choice for construction engineering technical schools and more! [Heavy Duty Construction]: This standard and metric thread gauge is made using premium Carbon Steel a rustproof material which doesn t bend or break designed to withstand the test of time. [Wire Loop Assembly]: This screw size and thread gauge features a smart wire loop design which makes it easy to store or hang at the same time preventing losing the smaller pieces. [Engraved Measurements]: Say goodbye to the hassle and guesswork that consumes your time with the thread gauge SAE and metric featuring permanently engraved thread sizes for easy and accurate identification. [Size Range]: Metric sizes included: 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 M24x3.0. Inch sizes included: 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. Colour:Silver & Black Material:carbon steel Package Contents: 44 * Nut and Bolt 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.