Laser-etched size marking makes it easy to locate the right socket for the job. Great for working in low-lit or greasy environments. Permanent marking resists chipping, fading and corroding. 12 point configuration allows you to work in cramped areas where turning capacity is limited. Slide right over extra long hardware without having to adjust your grip with Craftsman's 12mm easy to read Socket, 12-point. Deep depth 1/2 inch Dr. Made from heat treated alloy steel.