Mercury - Black Max 3-Blade Aluminum Propeller 10" Diameter x 8" Pitch Right-Hand Rotation 3-Blade Aluminum Phantom Black Finish 896890A10. Overview. Every boater knows that feeling when the water smooths out, the motor hums just right and your boat seems to glide effortlessly forward. The Mercury Black Max 3-Blade Aluminum Propeller (896890A10) delivers that kind of reliability. It's built for the everyday runs, the calm mornings, and the quick trips that make life on the water simple and satis