Mercury - Black Max 3-Blade Aluminum Propeller 14" Diameter x 11" Pitch Right-Hand Rotation 3-Blade Aluminum Phantom Black Finish 77338A45. Overview. There's something deeply satisfying about a propeller that feels right. The Mercury Black Max 3-Blade Aluminum Propeller (Part Number 77338A45) delivers that sense of reliability that every boater wants. This kind lets you focus on the water, not what's happening behind you. From the first throttle push, you'll notice how confidently your boat move