These Sidchrome 12 Point 1/2" Drive Metric Loose Sockets are constructed from chrome vanadium for strength & durability & feature the TORQUEPLUS fastening system. This unique system allows greater contact with the flats of fasteners providing greater torque to enable easier fastening during all your automotive & professional tasks. Sidchrome TORQUEPLUS sockets spread the force over a larger contact area reducing rounding off & extending fastener life as well as being particularly useful on worn or rounded fasteners. These sockets are essential for all your automotive & professional jobs.