Description: Specifications: M3, M4, M5, M6, M8 Suitable for soft metal, such as aluminum plate, iron plate All-steel design with chromium-plated finish for the highest durability. Beautifully precise ratcheting action for high quality work. Easily switched from left to right handed operation, or locked for non-ratcheting use. Specification: Material: Tool Steel Color: Silver Length: Approx. 12cm/4.7inch Wrench capacity: W1 / 16-1 / 4 "(M1-M8) Specifications: M3: 0.5 , M4: 0.7, M5: 0.8 ,M6: 1.0 ,M8: 1.25 Package Includes: 1 Piece of Tap Wrench 5 Pieces of Screw Taps Note: Since the size above is measured by hand, the size of the actual item you received could be slightly different from the size above