Martin MB12K Metric Socket Set, 3/8 in Drive, 12-Point, 12 Pieces, Alloy Steel

This is a set of 12 metric standard sockets, with 12-point openings, that come on a clip rail. 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.