Mercury - Quicksilver Black Diamond 3-Blade Aluminum Propeller 14" Diameter x 9" Pitch Right-Hand Rotation 3 Blades Aluminum High-Gloss Black Finish QA2026X. Overview. Every boater remembers that one perfect morning on the water - the air still, the motor humming, the boat gliding effortlessly over a smooth surface. That's the kind of feeling the Quicksilver Black Diamond 3-Blade Aluminum Propeller is built to deliver. It's dependable, easy to handle, and tuned for balance, giving you the smooth