Mercury - SpitFire 4-Blade Aluminum Propeller 10.1" Diameter x 14" Pitch Right-Hand Rotation Four Blades Aluminum Satin Finish 8M8026635. Overview. There's a moment every boater loves - when you push the throttle, feel the boat lift, and the water seems to fall away beneath you. That's the kind of effortless response the Mercury SpitFire 4-Blade Aluminum Propeller delivers. It is designed for smaller outboards but built with Mercury's signature precision, this prop offers smooth power, dependabl