Sidchrome sockets, spanner & wrenches are manufactured to meet & exceed international quality standards. So you can be sure your Sidchrome tools are tough enough to stand up to the harshest working environments. This set features the TorquePlus fastening system, a unique system that allows greater contact with the flats of fasteners, providing greater torque to make tightening easier. Conventional sockets and spanners damage fasteners by concentrating forces on the corners. Sidchrome drive design spreads force over a larger contact area, reducing rounding off and extending fastener life. TorquePlus is ideal to use on damaged, frozen or rusty fasteners.