High Quality: Each socket adapter is made of heat-treated vanadium steel with a black oxide coating. Tripod torque compression and superior strength withstand standard operating conditions. High-quality chrome-molybdenum steel and manganese phosphate coating prevent rust and corrosion for increased durability. Versatility: The 1/4" hex shank fits all quick-change chucks. Its ideal size makes it compatible with all brands of drill bits and screwdrivers. It works with all types of ratchets, ratchet wrenches, sockets, torque wrenches, and handles. Unique: Developed specifically for screwdrivers and wrenches, this impact model features a spring-loaded ball bearing that locks into the socket to prevent slippage during use. Compatible with a variety of tools: Guaranteed versatility and practicality, no matter what tool you use. Ideal for DIY, household maintenance, and most common repairs, but not for industrial use. A great addition to any toolbox.