Bi-directional design for removing or tightening damaged fasteners; Tapered entry enables socket to easily seat on a damaged fastener; Dual sized sockets designed to work with both SAE and metric fasteners; Square drive with hex base for use with impact gun, ratchet, wrench, or pliers; Chrome molybdenum alloy steel (Cr-Mo) for exceptional strength and long lasting durability; High-visibility laser etched markings provide quick size identification; Black oxide finish to resist corrosion; Up to 10x longer impact life vs. other impact extraction sockets; Up to 5x greater torque output vs. other impact extraction sockets; Minus-size sockets fit a wider range of damaged fasteners