Specification Brand : M & J TOOLING LLC BulletPoint1 : Accurate Measurement: With the 2024 new nut and bolt thread checker, you can confidently determine the inch and metric size of various threads BulletPoint2 : Keychain Attachment: Nut bolt thread checker is lightweight and compact, equipped with a keychain loop, which can be easily attached to your keys or belt. You can take it out and use it anytime and anywhere, which is very convenient BulletPoint3 : Nut and bolt thread checker: A simple insertion test can determine if the thread is up to standard. Quickly confirm the workpiece size by sliding the knob with one hand to tighten and measure BulletPoint4 : Versatile Unit Reading Design: Featuring both metric and imperial units, this thread checker provides versatility and convenience for precise measurements in any project BulletPoint5 : Long Lasting Performance: Made of materials including aluminum alloy and hardened stainless steel threads, this measuring tool is built to withstand heavy use and harsh environments. It ensures maximum thread strength and precision accuracy for both standard and metric nuts and screws ExteriorFinish : Portable Precise Thread Size Checker Keychain ItemName : New M27 X 3.0 6H Metric Thread Plug GAGE 27.0 3 GO NO GO P.D.'S= 25.051 & 25.316 ItemPackageQuantity : 2 ItemTypeKeyword : thread-gauges Manufacturer : M & J TOOLING LLC Material : Iron, Alloy MetalType : Iron, Alloy NumberOfItems : 1 PartNumber : JT0126MJ ProductDescription : YOU ARE PURCHASING THE PICTURED METRIC THREAD PLUG GAGE.