Mercury - Black Max Propeller 10.375" Diameter x 14" Pitch Right-Hand Rotation 3 Blades Aluminum Glossy Phantom Black Finish 816706A45. Overview. There is something about dependable gear that gives you peace of mind every time you're out on the water. The Mercury Black Max 3-Blade Aluminum Propeller has earned that trust from boaters for decades. It is smooth, responsive, and steady - the kind of prop that just works, no matter where your weekend takes you. You'll feel the difference in the way