Mercury - Black Max 4-Blade Aluminum Propeller (Black) 8" Diameter x 5" Pitch Right-Hand Rotation 4 Blades Aluminum Glossy Phantom Black Finish 812954A10. Overview. There's something special about having total control over your boat - that easy, responsive feel when every turn and throttle adjustment does exactly what you want. The Mercury Black Max 4-Blade Aluminum Propeller is built for that kind of precision. Designed for kicker motors and smaller outboards, it gives you the smooth steering a