Mercury - Black Max 3-Blade Aluminum Propeller 16" Diameter x 13" Pitch Right-Hand Rotation 3-Blade Aluminum Phantom Black Finish 78114A45. Overview. There's nothing quite like the moment your boat jumps onto plane, steady, confident, and ready for open water. That's the feeling the Mercury Black Max 3-Blade Aluminum Propeller (Part Number 78114A45) delivers every time you hit the throttle. Built to balance strength, smoothness, and reliability, it's a prop that feels like an extension of your b