The double ended Phillips screwdriver bits are made of heat-treated CR-V with high strength and hardness (HRC58-62), durable and anti-bending, and the surface is mirror chrome plating for enhanced grip and corrosion resistance. The two sided screwdriver bits are designed with strong magnetism, which can stably absorb the screws vertically or tilted and easily fix the screws, especially in a small space, which can make it more convenient to complete the work. Cross flat head drill bit specifically designed for driving screws into wood, metal, and other materials effortlessly. Can accurately tighten screws without damaging screws and screwdriver bits. The screw rod adopts a double-headed design, one end is a Phillips screwdriver and the other is a slotted screwdriver, which can be easily disassembled and used interchangeably and is suitable for different types of screws, ensuring versatility. 1/4" hex shank driver bits can be used with electric screwdrivers, manual screwdrivers, electric drills, etc. for electricians, mechanical repair work, and furniture installation. Make sure the screwdriver bit is firmly inserted into the power tool chuck before operation. Avoid using excessive forces 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.