
HIGH QUALITY: Each socket adapter is made of heat-treated vanadium steel with a black oxide coating. Tripod torque compression and superior strength to meet normal operating conditions, high-quality chrome-molybdenum steel and manganese phosphate coating to prevent rust and corrosion and durable. VERSATILITY: The 1/4-inch hex shank fits all quick-change drill chucks. The perfect size makes it compatible with all brands of drills and screwdrivers. Works with all types of ratchets, ratchet wrenches, sockets, torque wrenches, and waiting handles. Unique: Special impact design developed for screwdrivers and wrenches. Each square head is equipped with a spring-loaded ball bearing and locked into the socket to prevent slipping during use. FOR TOOLS: Versatility and convenience, no matter what tool you use. Ideal for DIY, home maintenance, and most general repairs, but not for industrial work.