Mercury - Quicksilver Black Diamond 3-Blade Aluminum Propeller 9.25" Diameter x 12.5" Pitch Right-Hand Rotation 3-Blade Aluminum Phantom Black Finish QA2200R. Overview. There's a certain kind of confidence that comes from knowing your prop will deliver, every single time. That's exactly what you get with the Quicksilver Black Diamond 3-Blade Aluminum Propeller. It's smooth, responsive, and ready to perform whether you're easing out from the dock at sunrise or opening up the throttle to chase the