Kobalt Standard (SAE) 3/8-in Drive Spline 23/32-in Shallow Socket

This spline socket fits both 23/32-in and 18mm fasteners. 3/8-in drive. Spline sockets work on multiple types of fasteners including SAE, metric, 6-point, 12-point, square, star and most rounded. Constructed from chrome vanadium steel and heat treated for strength and durability. Size callout is hard stamped. Meets or exceeds ASME specifications. Hassle-free lifetime guarantee.