Chrome plated 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 size taps and the tool is fully reversible via the ratchet switch. The handle is adjustable and removable, ideal for avoiding nearby obstructions and facilitating threading in awkward areas. Ratcheting and T-handle tap wrenches Three-position gear housing for fast and efficient ratcheting action, a sliding handle with spring-loaded tap, can be extended in either direction for added leverage. Metric Tap Wrench M3-M8 (86mm long body x 100mm handle width) for easy switching from left to right hand or locked for non-ratcheting use Designed for use with taps and can also be used on left hand tap, reamers, screw extractors and other square shank tools. T-Handle Ratchet Tap Holder Wrench with 5pcs M3-M8 Easy switching from left to right hand or locked for non-ratcheting use. Function: T-Handle Ratcheting Tap Wrenches Three-position gear box for fast and efficient ratcheting action, a sliding handle with a spring-tensioned tap, and can be extended to the full length in either direction for more leverage.