Mercury - Black Max 3-Blade Extra Cup Aluminum Propeller 14" Diameter x 13" Pitch Right-Hand Rotation 3-Blade Aluminum Gloss Black Finish 8M0151358. Overview. Ask any seasoned boater about the Mercury Black Max, and you'll hear the same thing-it's dependable, forgiving, and simply gets the job done. The Mercury Black Max 14x13 Right-Hand 3-Blade Aluminum Propeller (8M0151358) is one of those trusted go-to props that's been on more docks than you can count. It's smooth on acceleration, steady at