Built for use with impact tools, these TEKTON 3/8 in. drive deep impact sockets effortlessly break free 12-point fasteners commonly found in European cars. TEKTON impact sockets efficiently transfer torque from impact wrench to fastener, loosening the most stubborn nuts and bolts. Made from high-strength chrome vanadium steel, our impact sockets are more resistant to drive end round out than standard impact sockets, resulting in a longer useable life. TEKTON impact sockets meet or exceed ANSI performance standards. The high-torque, 12-point socket grips the broad, flat sides of nuts and bolts, not just the corners, so there's no need to worry about stripping fastener head or damaging socket. An extra-deep broach enables you to access the entire length of fasteners. Even in low light, the high-contrast, permanent laser etched size markings are easy-to-read. The customized red TEKTON case can be stored in a tool chest or carried to your job site. Molded size markings keeps set organized and identifies any missing sockets.