The Quicksilver Nemesis 4-Blade Aluminum Propeller is the world's first performance aluminum propeller, and as such, it delivers big power and responsiveness. In fact, the Nemesis from Quicksilver provides 16-25% faster acceleration and superior holding. This holding power has no penalty in top speeds versus a similar 3-blade aluminum propeller. In other words, if your engine's RPM works with a 3-blade prop, you can replace it with the same pitch Nemesis propeller. In the end, you get 3-blade speed with 4-blade holding and acceleration. The Quicksilver Nemesis 4-Blade boat propeller boasts high-quality casting and a high-gloss Phantom Black finish. Right-hand rotation. Ideal for use with 90 CT – 300hp Mercury/MerCruiser engines. World's first performance aluminum propeller. Provides 16-25% faster acceleration. 4-blade holding and acceleration. High-quality casting. Phantom Black finish. Item(s) will ship directly from the manufacturer; delivery options and/or shipping upgrades are unavailable. Please allow 7-10 business days for delivery. Contiguous 48 states only. A street address is required for delivery. Once installed, this product is not eligible for return or exchange.