Mercury - Quicksilver Q3 3-Blade Stainless Steel Propeller 15" Diameter x 15" Pitch Right-Hand Rotation 3-Blade Stainless Steel High Polished Finish 8M0103519. Overview. There's a special kind of thrill when your boat leaps forward with instant power - when the bow lifts, the engine roars, and the water smooths into a streak of silver behind you. That's what the Quicksilver Q3 3-Blade Stainless Steel Propeller (8M0103519) delivers every time you throttle up. Built for boaters who want more than