Specification: Material: S2 alloy steelSize: SL6mmHex Shank: 6.3mm / (1/4inch)Length: 50mm / 1.97inch Weight: 113g Package Includes: 10 x Screwdriver Bits High-quality material: These slotted screwdriver bits are made of alloy steel, which is durable, has high torque and high toughness. Can withstand heavy-duty use without breaking or bending. Wide range of uses: These screwdriver bits feature a 1/4" hex shank, compatible with most impact drivers, can be used in various applications, and the drill bit type is printed on the surface, making it easy to choose the drill bit you need. Including woodworking, metalworking and DIY project. Precise Fit: The H6.3 50 SL6mm hex shank ensures a secure, precise fit into the screw head, minimizing slippage and preventing damage to the screw or bit. Multiple Sizes: This 10-piece set includes different sizes of flat head screwdriver bits with 6.3mm (1/4 inch) hexagonal shank, widely used in pneumatic screwdrivers, electric drills, etc. Lets you handle a wide variety of screw sizes and types with ease. Convenient Storage: The screwdriver bits are packed in a compact storage box, keeping them organized and easy to access, making them ideal for professionals and DIY enthusiasts alike.