Mercury - Quicksilver Black Diamond 3-Blade Aluminum Propeller 16" Diameter x 16" Pitch Right-Hand Rotation 3 Blades Aluminum Black Finish QA2010X. Overview. There's a certain moment on the water when everything just feels right - the engine hums low, the hull rises smooth, and the prop bites cleanly into the current. That's the kind of confidence the Quicksilver Black Diamond 16" x 16" Aluminum Propeller brings to every trip. It's the kind of prop you don't have to think about - because it simp