Mercury - Black Max 3-Blade Aluminum Propeller 9.25" Diameter x 11.5" Pitch Right-Hand Rotation 3-Blade Aluminum Phantom Black Finish 897754A11. Overview. There's nothing like that moment when your boat feels perfectly in sync with the water - lifting cleanly onto plane, running steady, and responding exactly how you want it to. That effortless control doesn't just happen by chance; it comes from a propeller built to perform with balance and precision. The Mercury Black Max 3-Blade Aluminum Prop