1/2IN DR BOLT BITER 21 MM

• 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