Tapered entry enables insert to easily seat on a damaged fastener
Designed to work with a static, ratcheting or open-end wrench for ultimate versatility
Hex base compatible with 6 point, 12 point and spline wrenches
Ultra-thin design, 70% thinner than traditional extraction tools
Dual sized inserts designed to work with both SAE and Metric fasteners

The GEARWRENCH Bolt Wrench Inserts are designed with innovative features to grip rounded out, frozen, and damaged fasteners. The revolutionary Bolt Biter gripping design is bi-directional, seats quickly and safely on fasteners, and removes easily from fasteners after use. Bolt Biter Wrench Inserts offer the slimmest solution to remove a damaged fastener in a tight and confined space.