Features: 1.Each adapter made of heat-treated hardened chrome Vanadium(CR-V) steel, good abrasion resistance and high hardness, without breaking or rusting, deliver on long-lasting strength and durability. 2.Spring loaded ball bearing on head, designed to fit securely while providing versatility and convenience no matter which tool you use. Compatible with common to heavy duty power tools, drivers, hand wrench, and screwdriver handle tools for flexible uses. 3.All socket-drive adapter are 1 or 4 hex shank, the 1 or 4" hex shank air impact driver sockets fit all quick change chucks as well as standard drill chucks, fast connect, work on quick change drill chuck, standard drill chuck, handheld screwdriver, electric screwdriver, change your hand socket set into a driver socket set. 4.Ideal for Home Mechanics: Impact socket adapter is suitable for both serious hobbyist mechanics and occasional DIYer, auto parts repairs and household maintenance, machinery, motor vehicle, cars, etc. Specification: Material: Metal Color: Silver Size: 65mm 73mm 150mm Package Includes 2xPieces 1 or 4" adapter: 65mm and150mm 2xPieces 3 or 8" adapter: 65mm and150mm 2xPieces 1 or 2" adapter: 73mm and150mm Package Includes 2xPieces 1 or 4" adapter: 65mm and150mm 2xPieces 3 or 8" adapter: 65mm and150mm 2xPieces 1 or 2" adapter: 73mm and150mm