The Proto B329289 Black Oxide Combination Wrench features the Torqueplus™ fastening system, which drives off the fastener body rather than the corners — reducing the risk of rounding and applying up to 15% more torque. The unique arc design increases surface contact by 400%, making it especially effective for removing damaged or stubborn fasteners.
This 1-1/2" SAE combination wrench offers both an open end and a 12-point box end in a single tool, providing versatility across a wide range of industrial, MRO, and maintenance applications. Sold individually with a black oxide finish for corrosion resistance.