Mercury - Quicksilver Silverado Propeller 13.8" Diameter x 21" Pitch Right-Hand Rotation 3 Blades Stainless Steel High-Polished Finish QS5056X. Overview. There's something special about when your boat just feels right - when every throttle push delivers clean power, every turn stays smooth, and the boat glides across the water as if it were part of it. That's the feeling you get with the Quicksilver Silverado 3-Blade Stainless Steel Propeller ( QS5056X). Built for boaters who expect reliability,