Mercury - Quicksilver Black Diamond 3-Blade Aluminum Propeller 13.25" Diameter x 17" Pitch Right-Hand Rotation 3 Blades Aluminum Black Finish QA2206X. Overview. Every boater knows the feeling - that deep hum as the throttle opens and your boat glides forward with confidence. That's when the right prop shows what it's really made of. The Quicksilver Black Diamond Aluminum Propeller has earned its reputation for being that reliable, no-nonsense choice. It's the kind of prop that just works - smoot