Mercury - Quicksilver Black Diamond 3-Blade Aluminum Propeller 10.4" Diameter x 14" Pitch Right-Hand Rotation 3-Blade Aluminum Phantom Black Finish QA2080X. Overview. When you're out on the water, you want gear that's dependable - something that feels right the moment you throttle up. The Quicksilver Black Diamond 3-Blade Aluminum Propeller delivers exactly that. It's smooth, balanced, and responsive, giving your boat a confident grip on the water whether you're cruising, fishing, or just taking