Mercury - Black Max 3-Blade Aluminum Propeller 14" Diameter x 10" Pitch Right-Hand Rotation 3-Blade Aluminum Phantom Black Finish 854342A45. Overview. There's a certain comfort in knowing your boat will perform exactly how you expect. That's what you get with the Mercury Black Max 3-Blade Aluminum Propeller (Part Number 854342A45)-a prop that's as dependable as it is smooth. From early morning runs to lazy afternoon cruises, this prop delivers steady acceleration, easy handling, and that unmista