Mercury - Revolution X 4-Blade Stainless Steel Propeller 21" Pitch Left-Hand Rotation Four-Blade Design Stainless Steel Polished Finish 8M0182947. Overview. There's a thrill that comes with commanding serious power on the water the kind where the engine roars, the hull lifts, and everything just clicks into place. The Mercury Revolution X 4-Blade Stainless Steel Propeller (8M0182947) was made for that feeling. Designed specifically for the new Mercury V10 outboards, it transforms raw horsepower