Michigan 993042: Michigan Wheel Apollo XHS Stainless Steel Propeller, A Series, 14-3/8 x 15 RH, 3-BladeApollo propellers are highly polished, ultimate performance, stainless steel propellers designed to use Michigan Wheel’s XHS Hub System. The CAD designed high performance blade geometry is available in large diameter (ideal for heavier applications that require increased blade area), and 4-blade configurations (designed to improve hole shot for pulling/towing in water sports).