Mercury - Vengeance 3-Blade Stainless Steel Propeller 9.5" Diameter x 11" Pitch Right-Hand Rotation 3-Blade Stainless Steel Polished Finish 899820A05. Overview. There is a special kind of satisfaction that comes when your boat responds exactly the way you expect it to - smooth acceleration, steady grip, and a confident pull through every turn. The Mercury Vengeance 3-Blade Stainless Steel Propeller (Part Number 899820A05) delivers that feeling every time. It's solid, steady, and responsive, givi