Solas Amita 3-Blade Mercury/Yamaha 40-140hp Aluminum Propellers utilizes a state-of-the-art squeeze-casting process to make its aluminum propellers stronger and tougher than traditional die-cast propellers. This provides outstanding acceleration, cruising, and top-end speed. Superior coatings and a high-tech 4-layer painting process ensure anti-corrosion performance. Traditional pressed-in rubber hub absorbs vibration and reduces slipping. Right rotation. State-of-the-art squeeze-casting process Stronger and tougher than die-cast propellers Better acceleration, cruising, and top speed 4-layer paint Corrosion-resistant Pressed-in rubber hub