Mercury - Black Max 3-Blade Aluminum Propeller 14" Diameter x 13" Pitch Right-Hand Rotation 3-Blade Aluminum Phantom Black Finish 77340A45. Overview. There's something about dependable performance that makes boating feel effortless. The Mercury Black Max 3-Blade Aluminum Propeller (Part Number 77340A45) delivers that feeling every time you leave the dock. It's steady, responsive, and built to perform without drawing attention to itself. You'll notice how quickly your boat gets on plane, how clea