All standard and deep hand sockets and ring spanners feature the TORQUEPLUS fastening system. This unique system allows greater contact with the flats of fasteners, providing greater torque to enable easier fasteningConventional sockets damage fasteners by concentrating forces on the cornersSidchrome TORQUEPLUS sockets and ring spanners spread the force over a larger contact area, reducing the rounding off and extending fastener lifeSidchrome TORQUEPLUS sockets are particularly useful on worn or rounded fasteners