Mercury - Bravo Three Front 4-Blade Stainless Steel Propeller 15.3" Diameter x 26" Pitch Left-Hand Rotation 4-Blade Stainless Steel Matte Finish 8M8022440. Overview. There's a special kind of satisfaction in feeling a big boat respond like it's light on its feet steady, smooth, and sure. The Mercury Bravo Three Front 4-Blade Stainless Steel Propeller (8M8022440) gives you that experience every time you take the helm. Designed as the front prop in Mercury's renowned Bravo Three dual-prop system,