Mercury - Enertia 3-Blade Stainless Steel Propeller 13.8" Diameter x 20" Pitch Right-Hand Rotation 3-Blade X7 Stainless Steel Polished Finish 8M0151241. Overview. There's nothing quite like that instant surge when you hit the throttle and feel your boat lift cleanly onto plane - steady, confident, and full of life. That's exactly what you'll get with the Mercury Enertia 3-Blade Stainless Steel Propeller (8M0151241). Built for boaters who love a crisp, responsive ride, this prop brings together s