Mercury - Quicksilver Bravo Three 4-Blade Stainless Steel Propeller 15.75" Diameter x 22.5" Pitch Left-Hand Rotation 4-Blade Stainless Steel Matte Finish 8M0123406. Overview. There's a moment when your boat finds its rhythm the throttle responds instantly, the hull lifts cleanly, and the water feels like it's working with you, not against you. That's the moment the Quicksilver Bravo Three 4-Blade Stainless Steel Propeller (8M0123406) is built for. Designed for precision, power, and stability, it