1/2 Dr 12-Pt Std Length Fractional DUO SOCKET Set The thin-wall design of chrome hand sockets has been combined with the strength and durability of GP Impact Sockets to create DUO-SOCKET. Built specifically to address the needs of the professional technician using hand tools, cordless impact tools and air tools; DUO-SOCKET provides one socket for all applications. The ratchet included in each set is a fine tooth, low profile design that allows greater access to confined areas and will not catch on items in the work area. The ratchet has a recessed quick release button that prevents accidental release of the socket. All DUO-SOCKET sockets are marked by both a roll stamp and a large laser etching on the opposite side, providing a lifetime of readability. All sets feature wobble extensions which provide 15 degrees of deflection. They can also be locked straight for normal use. Set contains all standard length 12 point sockets in fractional sizes, plus a 24 tooth quick release ratchet and two extensions.