Toolcraft 820772 1/2" Drive Socket 18mm

Toolcraft 12.5mm (1/2in.) Sockets - Toolcraft 820772, The power transmission from the nuts to the screw head is not via the corners, but via the flanks. This ensures higher power transmission, plus the sensitive edges of the nut remain intact. Toolcraft 820772 1/2" Drive Socket 18mm

Price: 3.22 from Rapid Online Rapid Electronics Ltd.