20 in 1 design: The handle is equipped with a 1/4 screwdriver socket and 10 double-head drills. This ratchet screwdriver can be used with 20 normal screwdrivers. Optional screwdriver: Y1, ph + 5.0 + 3.0) straight screwdriver (- 3.0-5.0 6.0); Hex screwdriver:(T10, T15, T20, T25, T30); Hex screwdriver:(H2, H2.5, H3, H4, H5, H6) triangular screwdriver:(2.3,U, U2.6). Sturdy and durable material: Our screwdrivers are made of S2 alloy steel with hardness up to 58-60hrc. Good resistance to corrosion. The screwdriver sleeve with a powerful built-in magnet holds each bit firmly when the screwdriver is placed in the screw pocket. The ergonomic ABS resin handle and threaded anti-slip surface can significantly improve friction. Removable storage slot for placing 10 screwdrivers. Multi-angle operation: This type of ratchet screwdriver can be rotated up to 180. So it can help you work in hard to reach areas. Additionally, these magnetic screw drill bits can be controlled by a magnet to turn tiny screws. Humanized design: Clockwise and counterclockwise three-speed lock adjustment can quickly tighten or loosen the screws to save operating force. Wide application: 20 in 1 design screwdriver set has a wide range of applications. It can be used in DIY, home repair, car maintenance and outdoor to meet your needs.