Mercury - Quicksilver Black Diamond 3-Blade Aluminum Propeller 13" Diameter x 19" Pitch Right-Hand Rotation 3-Blade Aluminum Phantom Black Finish QA2038X. Overview. There's something deeply satisfying about a boat that moves exactly the way you expect - smooth on takeoff, steady in turns, and easy to control through the throttle range. The Quicksilver Black Diamond 3-Blade Aluminum Propeller brings that feeling to life. It's a prop that delivers consistency - the kind of quiet, confident perform