Kobalt Standard (SAE) 3/8-in Drive 12-point 5/16-in Shallow Socket

12-point socket design allows use on multiple fastener types including 6-point, 12-point, square and some rounded. 12-point design also allows flexibility and versatility in socket positioning. Constructed from 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.