Mercury - Quicksilver Q3 Propeller 15.6" Diameter x 13" Pitch Right-Hand Rotation 3-Blade Stainless Steel High-Polished Finish 8M0103517. Overview. You can always feel the difference between a prop that moves the boat and one that makes it come alive. It's the kind of prop that feels instantly responsive - the moment you throttle up, you can sense the lift, the control, and the smooth pull that keeps you connected to the water. Whether you're carving through an open bay or easing into a turn at