Chrome finish for maximum durability. Size of taps: 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. Ratchet and T-handle tap wrenches Three-position gear housing for easy fast and efficient ratcheting action, a sliding handle with spring-loaded tap, can be extended in either direction for added strength. Metric M3-M8 tap wrench (86mm long body x 86mm wide) 100mm handle) for easy switching from left to 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. Due to factors such as manual measurement and display differences, there may be slight differences between individual products and pictures, please excuse me.