Mercury - Black Max 3-Blade Aluminum Propeller 16" Diameter x 11" Pitch Right-Hand Rotation 3-Blade Aluminum Phantom Black Finish 78112A45. Overview. There's a certain moment every boater lives for: the surge as your boat lifts effortlessly onto plane, the hum of the motor settling into its rhythm, and the steady pull across open water. That's what you get with the Mercury Black Max 3-Blade Aluminum Propeller (Part Number 78112A45). Dependable, balanced, and built to handle it all, this prop fee