2Pcs H4 Flat Hex Screwdriver Bit 4Mm Tip 1/4" Shank 4" Long Black Phosphate

Flat hex screwdriver bit is made from specially heat-treated S2 steel for superior strength, hardness and durability. The black phosphate coating provides corrosion resistance and reduces friction for smoother operation and longer screwdriver bit life. The hexagonal head of the screw driver is magnetized for easy use. Flat hex driver with magnetism can stably absorb the screw vertically or obliquely, making it easy to fix the screw, especially in a small space. Precision CNC machined hex head, precise appearance, reduces head wear during high-intensity tightening operations. Special torque buffer design, when the vibration generated during operation is absorbed by this part, the torque transmission is increased, achieving the effect of protecting the screwdriver head and extending the service life. Hex drill bit wrench is specifically designed for driving screws into wood, metal, and other materials effortlessly, and can accurately tighten screws without damaging screws and hex bit socket. 1/4" drive hex shank bits can be used with electric screwdrivers, manual screwdrivers, electric drills, etc.. Suitable for various applications such as DIY projects, woodworking, electronics repair, etc. Make sure the hex bit is firmly inserted into the power tool chuck. Avoid using excessive force when tightening the screws to prevent the bit from being damaged or slipping out. Store the screwdriver bit in a dry place to maintain its performance.