Mercury - Vengeance 3-Blade Stainless Steel Propeller 11" Diameter x 12" Pitch Right-Hand Rotation 3-Blade Stainless Steel Polished Finish 855856A46. Overview. There's a special kind of satisfaction when your boat jumps onto plane, smooth and responsive, with power you can feel right through the throttle. The Mercury Vengeance 3-Blade Stainless Steel Propeller (Part Number 855856A46) captures that feeling every time you head out. It's strong, dependable, and tuned to deliver performance that fee