Mercury - Black Max Propeller 10.5" Diameter x 13" Pitch Right-Hand Rotation 3 Blades Aluminum Glossy Phantom Black Finish 816704A45. Overview. There is a certain peace of mind that comes with knowing your prop will perform every single time you turn the key. The Mercury Black Max 3-Blade Aluminum Propeller is the kind of dependable, all-around performer boaters rely on season after season. It delivers smooth acceleration, steady cruising, and a balanced feel that makes steering easy and natural