Fits most corded or cordless drills, heavy duty inner hexagonal sleeve. It is widely used in home DIY, auto parts, woodworking, professional machine repair, etc. The product is easy to install and disassemble, not easy to fall off during use. Anti-rust, non-slip, high occlusion, tight and flexible. Easy installation and strong magnetism: Quick tightening and this magnetism socket set is indispensable with strong magnetism for assembly and disassembly in private and professional. Applicable for installation in these hex tools, such as air screwdrivers, electric screwdrivers, air drills, electric drills, guns, manual screwdrivers, etc. p> Heat treated chrome vanadium steel, anti-rust, non-slip, flexible. anti-rust, non-slip, flexible. Mounted on a black clip, easy to use and storage. Applicable for installing these hex tools, such as pneumatic screwdriver, electric screwdriver, pneumatic drill, electric drill, gun drill, manual screwdriver , etc. It\'s widely used in household DIY, auto parts, woodworking, professional machine repair, etc. Name: Strong Hexagon inner sleeve Material: chrome vanadium steel