Mercury - Vengeance 3-Blade Stainless Steel Propeller 10.375" Diameter x 14" Pitch Right-Hand Rotation 3-Blade Stainless Steel Polished Finish 855860A46. Overview. There's a certain rhythm to boating-the way your engine hums, the hull lifts, and the water parts cleanly behind you. The Mercury Vengeance 3-Blade Stainless Steel Propeller ( 855860A46) was built to keep that rhythm smooth and steady, trip after trip. It's the kind of prop that gives you confidence every time you throttle up-strong,