Kobalt Standard (SAE) 3/8-in Drive 8-point 5/16-in Shallow Socket

8-point design helps prevent slippage and rounded fasteners. 8-point design can be used on both square and hex shaped fasteners. Constructed of chrome vanadium steel and heat treated for strength and durability. Professional grade, high polish finish. Size callout is laser etched. Red color stripe helps identify SAE sockets. Meets or exceeds ASME specifications. Hassle-free lifetime guarantee.