Made of alloy steel with chromium-plated finish, high hardness, rust and corrosion resistant Easily switched from left to right handed operation, or locked for non-ratcheting use Function:T-Handle Ratcheting Tap Wrenches Three position gear box for quick, efficient ratcheting action, a sliding handle with spring tension tap, and may be extended full length in either direction for more leverage Package Include: 1pcs T-handle tap wrench ratchet spanner with 5pcs M3-M8 Machine Screw Thread (1pcs M3; 1pcs M4; 1pcs M5; 1pcs M6; 1pcs M8 Usage:designed for use with taps and can also use on the left hand tap, reamers, screw extractors and other tools with a square shank, good for motor mechanics, engineers, electricians, etc