Mercury - Quicksilver Black Diamond 3-Blade Aluminum Propeller 9.3" Diameter x 11" Pitch Right-Hand Rotation 3 Blades Aluminum Black Finish QA3152R. Overview. There's something special about those calm mornings when the sun just starts to break across the water - when the first turn of the key brings your engine to life and you can feel that familiar hum beneath your feet. The Quicksilver Black Diamond 9.3" x 11" Aluminum Propeller is made for those moments. It's not about flash or frills; it's