Mercury - Black Max Propeller 11.625" Diameter x 10.5" Pitch Right-Hand Rotation 3 Blades Aluminum Glossy Phantom Black Finish 827312A45. Overview. If you've been out on the water long enough, you know the difference between a prop that simply works and one that truly feels right. The Mercury Black Max 3-Blade Aluminum Propeller is the kind you can count on - smooth, balanced, and always ready for the next run. It s been a trusted favorite for years, built to deliver steady power and reliable pe