function openWindowCustom(url, name, param) {popupWin = window.open(url, name, param);popupWin.focus(); };Solas Amita Three-Blade Yamaha 50-130hp Aluminum Propeller is made using a state-of-the-art squeeze-casting process to make its aluminum propellers stronger and tougher than traditional die-cast props. Squeeze casting produces propellers with finer grain and much less porosity than die casting and equals thinner yet stronger blades. This provides outstanding acceleration, cruising and top speed. Superior coatings and a high-tech painting process for corrosion resistance. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Aluminum Props.