Mercury - Black Max 3-Blade Aluminum Propeller 14" Diameter x 9" Pitch Right-Hand Rotation 3-Blade Aluminum Phantom Black Finish 854340A45. Overview. Ask any boater what they want from a propeller, and they'll tell you the same thing-smooth acceleration, steady control, and confidence every time they hit the throttle. That's exactly what the Mercury Black Max 3-Blade Aluminum Propeller (Part Number 854340A45) delivers. It's built for boaters who care about performance but also appreciate reliabi