Mercury - Quicksilver Black Diamond 3-Blade Aluminum Propeller 13.8" Diameter x 15" Pitch Right-Hand Rotation 3-Blade Aluminum Phantom Black Finish QA2034X. Overview. There's a certain comfort that comes from knowing your prop will perform every time you launch. The Quicksilver Black Diamond 3-Blade Aluminum Propeller is that dependable companion on the water - smooth, balanced, and built for boaters who like things to work the first time, every time. Whether you're cruising the lake with friend