Kobalt Metric 1/2-in Drive 12-point 20mm Shallow Socket

12-point socket design allows work on multiple fastener types including 6-point, 12-point, square, star and some rounded. 12-point design also allows flexibility and versatility in socket positioning. Constructed of chrome vanadium steel and heat treated for strength and durability. Professional grade, high polish finish. Blue color stripe helps quickly identify metric sockets. Size callout is laser etched. Meets or exceeds ASME specifications. Hassle-free lifetime guarantee.