Features 1,[Quick Size Checking] The nut and bolt thread checker allows for quick and effortless inspection of nut and bolt sizes by simply screwing them onto the gauge. 2,[Extensive Size Range] Featuring 28 different sizes, our thread checker can identify 14 metric thread sizes and 14 standard thread sizes, catering to a wide range of applications. 3,[Multi Functional] With rulers measuring 6 inches and 14 centimeters on both sides, the thread gauge helps in quickly identifying various lengths of bolts, screws, and nuts. 4,[Sturdy Construction] Constructed from thickened aluminum alloy and hard SUS304 stainless steel threads, the bolt and nut identifier gauge is highly sturdy and lasting. 5,[Ideal for Replacement] Use this bolt and nut identifier gauge to effectively replace damaged, loose, rusted, or worn out parts with ease and accuracy. Specification Item Type: Nut and Bolt Thread Checker Material: Aluminum Alloy Package List 1 x Nut and Bolt Thread Checker Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.