1Double Drive Head: Adopt double drive head design, accept 1 or 4in drive socket and 1 or 4in hex screwdriver bit 2Forward Backward Selector Levers: The forward and backward selector levers are designed for one handed operation, you can easily switch between the 2 swing directions with a single click 3Rust Resistance: Surface adopt heat treatment and chrome plating to improve durability and rust resistance 4For Small Space Operations: This miniature ratchet is ideal for nuts and bolts that are difficult to reach, suitable for small space operations 5Easy to Carry: Mini socket ratchet wrench come with small size, easy to carry, convenient to store Item Type: Mini Socket Ratchet Wrench Material: Chrome vanadium steel Purpose: Socket ratchet wrench, screw nut and bolt Color: Silver and black Interface Diameter: 1 or 4in(approx. 6.35mm or 0.3in) Square Head Diameter: 1 or 4in(approx. 6.35mm or 0.3in) Head Width: Approx. 18mm or 0.71in Hole Depth: Approx. 11mm or 0.43in Number of Teeth: 72 1 x Mini Socket Ratchet Wrench