Aluminum 3-Blade (12 x 10") Evinrude Johnson RH Propeller, 778606More Performance for the money! Evinrude Johnson props are cast with a custom aluminum alloy to give them greater strength and longer life than ordinary propellers. Many of the Evinrude Johnson outboards are speed cupped for better top end performance. Special baked on corrosion resistant paint gives added protection against salt water and galvanic corrosion. Precision casting provides greater strength and longer life. Baked on corrosion resistant