Tap Wrench: fit for M1-M12/1/16" - 1/2" (UNC/UNF)/1.5mm-10mm capacity, alloy aluminum chuck, chrome plated tool steel handle, providing a high hardness and wear resistance for long service life Applications: The tapping hand wrench helps in tightening various taps for all tapping operations. It can also be used with drills, reamers, screw extractors and other small hand-turning tools. Features: The tap wrench comes with a rigid handle and an adjustable one for the adjustment of the jaws for clamping the tools in an easy and firm way. The straight tap wrench provides perfect leverage and is especially for large diameter taps Easy to use: for repairing, processing and cleaning internal thread, it works with both hands to turn the wrench taps in one direction Tips: Tips: When using the tap wrench, the strength of the hands should be even. The wrench and the tap should create a 90 degree angle, and the tap and the threaded bottom hole are perpendicular to each other