Koken has a huge range of sockets available in 6 point, 12 point, standard and deep, impact, torx, internal torx, allen key, universal, bit sockets, nut grip, spline, adaptors, etc. from 1/4" drive to 2.1/2" drive. Because of the 'cold forging' process, all Koken sockets are extremely accurate with sizing. Cold forging is a process where the steel used is softened and then forced into the socket die. Because there is no expansion and contraction of the steels molecular structure, the accuracy of the sockets measurements are exact.This is one of the few sources in the world for industrial size sockets up to 8 inches in diameter!