Martin MB20K Imperial Socket Set, Metal Box Tool Storage, 1/4 in, 3/8 in Drive, 6-Point, 20 Pieces, Alloy Steel

This is a large socket set, including 14-6-point opening sockets. These are 1/4 in and 3/8 in drive sockets. Also included in the set is a spinner handle, a reversible ratchet, a 3 in extension, a 6 in extension, a spark plug socket, an adaptor, and a metal box. Hand socket wrenches are drop forged from steel bar. These wrenches are available in drive sizes of 1/4 in, 3/8 in, 1/2 in, 3/4 in and 1 in. These are special purpose wrenches designed for use in a wide range of sizes and capacities. All have square drives, and drive size is a measure of capacity. As detachable socket wrenches provide an almost endless combination of handles, attachments and sockets, it is possible to assemble a proper tool for almost any type of service within the tool's capacity.