The thin-wall design of chrome hand sockets has been combined with the strength and durability of GP Impact Sockets to create the Grey Pneumatic DUO-SOCKET® series. Built specifically to address the needs of the professional technician using hand tools, cordless impact tools and air tools; the series provide one socket for all applications. Each set features wobble extensions and the GP precision drive ratchet. Available in 1/4"-, 3/8"- and 1/2"-drive, and 20 individual set combinations; ratchets also available separately.