Mercury - Quicksilver Bravo Three 4-Blade Stainless Steel Propeller 15" Diameter x 28" Pitch Left-Hand Rotation 4-Blade Stainless Steel Matte Finish 8M0123412. Overview. There's a special feeling when your boat responds exactly how you want it to when you roll on the throttle, and everything feels smooth, balanced, and in control. The Quicksilver Bravo Three 4-Blade Stainless Steel Propeller (Part Number 8M0123412) was made for that kind of connection. It's built to handle serious horsepower wit