Mercury - Black Max 3-Blade Propeller 14" Diameter x 13" Pitch Right-Hand Rotation 3-Blade Aluminum Glossy Phantom Black Finish 8M0151357. Overview. There is a reason so many boaters swear by the Mercury Black Max it just works. Whether you're easing away from the dock at sunrise or trimming out for a smooth cruise, this prop feels predictable, balanced, and honest. You'll feel it the instant you push the throttle forward the steady push, the quiet confidence, and that signature Mercury smoothne