Mercury - Quicksilver Black Diamond 3-Blade Aluminum Propeller 10" Diameter x 13" Pitch Right-Hand Rotation 3-Blade Aluminum High-Gloss Phantom Black Finish QA3118R. Overview.. There's a certain rhythm to a good day on the water when the motor hums just right, the boat glides without hesitation, and every throttle push feels effortless. That's the kind of confidence the Quicksilver Black Diamond 10" x 13" Pitch Propeller (QA3118R) brings. It's not about flash or fancy tech; it's about reliabilit