Deep bite design: The deep bite design of the screw knife makes it more in -depth with the screw . This can reduce the possibility of sliding and improve the overall work efficiency by providing stronger connections between the drill and screws. Anti -impact: The design of these screw knife heads is used to bear high impact because the impact driver can produce a sudden and powerful rotation impact. Anti -impact design helps to prevent drills from broken or damaged in this case. Anti -sliding blade: Screw knife has anti -ski blades. This design helps to clamp the screws more effectively and reduce the possibility of sliding out of the screw from the screw during the operation. The design of mechanical principles: The design of the screw knife takes into account the mechanical principle. This includes factors such as torque and impact force. The design to that when the impact driver is connected with the screw , some collision reaction force is absorbed by the torque, which helps prevent of the drill. Hardness ≥62hrc: The hardness of the drill is equal to or 62HRC (Luo's Class). This high -hardness level indicates that the drill bit material has been optimized for durability and can withstand considerable wear and stress without deformation or damage., Weight: 0.42549216566 Pounds, Manufacturer: HiCOZZIE