10/20 Piece Impact Screwdriver Bit Set, Made of High-Hardness S2 Alloy Steel, with Strong Magnetic Torx Head Design, Precisely Compatible with All T7 to T40 Screw Sizes, Universal 1/ 4inch Hex Shank, Suitable for Electric Screwdrivers and Manual Tools, Comes with a Red Metal Carabiner for Easy Portability, Designed for Mechanical Repairs, Home Installations, and Industrial Scenarios