Mercury - Black Max 3-Blade Extra Cup Aluminum Propeller 16" Diameter x 13" Pitch Right-Hand Rotation 3-Blade Aluminum Phantom Black Finish 78114CP1. Overview. There's something special about the first few seconds when you open up the throttle and feel your boat surge forward, steady, confident, and ready to run. That's the kind of moment the Mercury Black Max 3-Blade Extra Cup Aluminum Propeller (Part Number 78114CP1) delivers every time. It's smooth where it should be, strong when it needs to