16 Piece Bolt Biter SAE/Metric Wrench Insert Set 86192-APX

Gearwrench 16-piece Bolt Biter™ SAE/Metric wrench insert set (Apex Model 86192-APX) is a comprehensive extraction solution designed to remove rusted, frozen, or severely rounded fasteners. These dual-sized inserts are engineered to work with both SAE and Metric hardware, fitting securely into standard 12-point wrenches, ratchets, or sockets. Forged from chrome molybdenum alloy steel, the ultra-thin design is 70% slimmer than traditional extraction sockets, providing essential access in cramped or obstructed mechanical spaces.
Key Features
Comprehensive 16-piece master set includes a wide range of dual-sized inserts from 1/4" (7mm) up to 3/4" (19mm) for maximum versatility.
Innovative bi-directional design allows the inserts to be used for both loosening damaged fasteners and tightening them if necessary.
Tapered entry geometry enables the insert to easily seat on a damaged fastener and "bite" more aggressively as additional torque is applied.
Ultra-thin profile provides up to 70% greater access than traditional extraction tools, making it ideal for tight engine bays and industrial machinery.
High-performance Chrome Molybdenum (Cr-Mo) steel construction ensures industrial-grade strength for high-torque professional applications.
Integrated magnetic retention system keeps the insert securely held within the wrench during use to prevent accidental drops.
Hexagonal base is fully compatible with 6-point, 12-point, and spline wrenches, as well as static or ratcheting handles.
High-visibility laser-etched markings provide rapid identification of sizes and permanent readability in oily shop environments.
Manganese phosphate finish offers superior resistance to rust and corrosion while providing a durable, non-slip surface.
Includes a professional injection-molded storage case with a clear top for quick tool selection and easy organization.
Meets or exceeds professional standards for durability, allowing for use with power tools like impact drivers.