10Pcs Flat Hex Screwdriver Bit 4Mm (H4) 1/4" Hex Shank 4" Long Magnetic

Magnetic tip screwdriver drill bit is made of heat-treated S2 steel for superior strength, hardness (HRC60-61) and durability. The surface is finely polished, glossy, and smooth, reducing friction resistance, excellent corrosion resistance and rust resistance, better than ordinary sandblasting products, anti-bending, anti-fracture, not easy to deform, and durable. 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. Professional grade 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. for electricians, mechanical repair work, and furniture installation. Make sure the hex bit is firmly inserted into the power tool chuck before operation. 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 prevent rust and maintain its performance.