Mercury - Black Max 3-Blade Aluminum Propeller 9" Diameter x 8" Pitch Right-Hand Rotation 3-Blade Aluminum Phantom Black Finish 828154A12. Overview. There's something special about a boat that responds exactly the way you expect it to. When you throttle up and feel the smooth pull forward, that's confidence - the kind that comes from knowing your prop can handle whatever the day brings. The Mercury Black Max 3-Blade Aluminum Propeller (Part Number 828154A12) delivers that feeling every time you'