Description: [material]: Use high quality bearing steel, sliding block for high hardness and strength. [Comfortable]: The handle provides firm and comfortable grip in use when exposed to fluid or moisture. [Easy to Use]: Easy to install and easy to use.It can improve the efficiency of thread processing, which is a necessary tool for manual tapping. [Adjustable]: Tap wrench has 1 rigid handle and 1 adjustable handle that adjusts the jaws to clamp tools easily and firmly. Straight tap wrench provides great leverage, and is specially suitable for larger diameter taps. [Widly Used]: Hand tap wrench can clamp various taps for tapping operations. It also can be used with drills, reamers, screw extractors and other small tools. Specification: Material: Steel Size Chart: M1-M8: 14cm/5.51inch M1-M10: 18.5cm/7.28inch M3-M10: 18.5cm/7.28inch M4-M12: 28.5cm/11.22inch M5-M20: 37.5cm/14.76inch Package Includes: 1 Piece Tap Wrench Note: Please allow slightly errors due to manual measurement and different monitors.