Mercury - Black Max 3-Blade Aluminum Propeller 14.5" Diameter x 19" Pitch Right-Hand Rotation 3-Blade Aluminum Phantom Black Finish 832830A45. Overview. There's a certain kind of confidence that comes from knowing your boat will respond exactly the way you expect. The Mercury Black Max 3-Blade Aluminum Propeller (Part Number 832830A45) gives you that peace of mind. It's smooth, steady, and ready for long weekends on the water. From the first push of the throttle to the final glide back to the do