The KTI 27511 Socket is a 12 pt 11 mm short socket. It is made of heat-treated, chrome-molybdenum alloy with a black oxide finish. It has a 3/8 in (9.5 mm) drive size and a 11 mm length.
The KTI 27516 socket is a short 3/8" drive 12 pt. 16mm socket. It is made of high-quality steel for long-lasting use. The socket is designed for use with a ratchet and wrench.
The KTI Socket is a 12 pt 21 mm short socket designed for use with the KTI 27521 ratchet. It is made of heat-treated alloy steel with a black oxide finish.