The Proto B329940 Satin Combination Wrench features a satin finish that provides corrosion resistance and a slip-resistant grip. The 12-point box end allows for fine indexing to improve speed and access, and is compatible with 4, 6, and 12-point fasteners. The box end incorporates the Proto TORQUEPLUS™ system for enhanced torque performance.
The open end features Proto's Anti-Slip Design (ASD), which helps prevent rounding of fastener heads during use. This 1-1/16" fractional wrench is built for professional MRO, industrial, and mechanical applications where reliable fastener engagement and durability are essential.