Mercury - SpitFire 4-Blade Aluminum Propeller 10.6" Diameter x 12" Pitch Right-Hand Rotation Four Blades Aluminum Satin Finish 8M8026625. Overview. There is a certain feeling you get when your boat leaps onto plane without hesitation - when every bit of power feels clean, controlled, and ready. The Mercury SpitFire 4-Blade Aluminum Propeller captures that feeling every time you throttle up. Built for smaller outboards, it delivers surprising punch and precision, giving you quicker acceleration,