Sockets feature SK's patented SureGrip hex design, which drives the side of the hex, not the corner. This not only provides increased strength but also avoids the rounding of rusted or damaged fasteners, which can occur when using a sharp cornered hex tool

Extra recess depth to allow for use where threaded fasteners protrude above the nut or where the fastener is domed. The improved black coating retains more rust preventative compound than black oxide.

Extra recess depth to allow for use where threaded fasteners protrude above the nut or where the fastener is domed. The unique nose-down design extends the taper as far as possible, for improved access over straight wall designs.