High quality socket adapter: CR-V material and black surface. Each adapter is forged from heat-treated chrome vanadium steel for added strength and treated with a corrosion-resistant black phosphate to prevent rust and corrosion. The fixed ball of the adapter fits stably into the socket, reduces wear and prevents the corners from being rounded so that they do not wobble when working.
WIDE APPLICATION: MULTIFUNCTIONAL - Set of 3 for assembling pneumatic screwdrivers, electric screwdrivers, air drills, hand screwdrivers and other hex tools, great upgrade accessories for universal sockets, adapter shock absorbers, universal connectors, shock absorber adapters and socket extenders.
COMPATIBILITY: Works with screwdrivers or drills, features a 1/4" quick-change collet system, or inserts directly into drill chucks. Replace your hand tool socket set with an impact/drive socket.
Rich colors, easy to choose. Different colored fit strips allow you to quickly select the right fit. This adapter set is designed to provide secure adapter extensions to your existing tools. Available in longer lengths to reach many tight spaces. A spring-loaded ball lock ensures a tight fit with the collet to prevent falling out during use.
It is designed for use with screwdrivers, drills or impact wrenches and attaches securely to these machines. Specifications: 3-piece 1/4" drive adapter, 3/8" drive adapter and 1/2" drive adapter

3PCS Socket Adapter for Screwdriver Key Changer