Kobalt Standard (SAE) 3/8-in Drive Spline 11/32-in Shallow Socket

This 3/8-in drive spline socket fits both 11/32-in and 9mm fasteners. Spline sockets work on 7 different fastener types: SAE, metric, 6-point, 12-point, spline, square, star and most rounded. Constructed of chrome vanadium steel and heat treated for strength and durability. Professional grade, high polish finish. Size callout is hard stamped and easy to read. Meets or exceeds ASME specifications. Hassle-free lifetime guarantee.