TEKTON 1-Inch Drive Deep Impact Socket Set, Inch, Cr-Mo, 6-Point, 1-Inch - 2-Inch, 9-Sockets | 4892 Designed for use with impact wrenches High-torque, 6-point sockets grip flat sides of fasteners, not corners, preventing round-off High-contrast permanent laser etched size markings are easy to read, even in low light Premium chrome molybdenum steel construction with corrosion-resistant black phosphate finish Meets or exceeds ANSI performance standards