Mercury - Black Max 3-Blade Aluminum Propeller 9.25" Diameter x 12.5" Pitch Right-Hand Rotation 3-Blade Aluminum Phantom Black Finish 896900A40. Overview. There's a feeling every boater knows - that perfect moment when the boat lifts cleanly onto plane, the engine hums just right, and the water slides past like glass. That kind of effortless control doesn't come from luck; it comes from a prop that's built to perform. The Mercury Black Max 3-Blade Aluminum Propeller (Part Number 896900A40) deliv