Mercury - Vengeance 3-Blade Stainless Steel Propeller 10.5" Diameter x 13" Pitch Right-Hand Rotation 3-Blade Stainless Steel Polished Finish 855858A46. Overview. Every boater knows that satisfying moment when the throttle responds instantly, the boat lifts cleanly onto plane, and the ride feels smooth and balanced. The Mercury Vengeance 3-Blade Stainless Steel Propeller (Part Number 855858A46) is built to deliver that feeling, time after time. It's powerful without being aggressive, reliable wit