Klutch Socket - SAE, 2 3/16in. 3/4in.-Drive, 12-Pt. This chrome vanadium socket is fully chamfered on both ends to accept drive tools and fasteners easily. Surface Drive Technology applies force to the walls of fasteners instead of the points, reducing stripping or rounding of fasteners. Backed by a lifetime guarantee. This Klutch 3/4in.-drive 12-pt. chrome vanadium socket is fully chamfered on both ends to accept drive tools and fasteners easily. Surface Drive Technology applies force to the walls of fasteners instead of the points, reducing stripping or rounding of fasteners. Backed by a lifetime guarantee.