Mercury - SpitFire 4-Blade Aluminum Propeller 10.1" Diameter x 15" Pitch Right-Hand Rotation Four Blades Aluminum Satin Finish 8M8026640. Overview. There's something special about the moment your boat lifts onto plane - that clean surge forward, the quiet confidence in how it grips the water, and the way everything feels connected. The Mercury SpitFire 4-Blade Aluminum Propeller captures that feeling every single time. Built for small outboards yet packed with the precision and punch of Mercury