Chrome finish for maximum durability. Tap sizes: M3-0.5, M4-0.7, M5-0.8, M6-1.0, M8-1.25. Use: For M3-M8 taps. The head is fully adjustable to fit all metric sized taps and the tool is fully reversible via the ratchet switch. The handle is adjustable and removable, ideal for avoiding nearby obstacles and making threading easier in awkward areas. Ratcheting and T-handle tap wrenches Three-position gear box for fast and efficient ratcheting action, a sliding handle with spring-loaded tap, can be extended in either direction for added strength. M3-M8 metric tap wrench (86mm long body x 100mm handle width) for easy conversion from left hand to left hand. right hand or locked for ratchetless use Designed for use with taps and can also be used on left hand taps, reamers, screw extractors and other square shank tools.