Vortex XHS Series 11-1/8"D x 13"P RH Rotation 3-Blade Aluminum Thru Hub Exhaust Propeller (992605) by Michigan Wheel®. A high performance aluminum propeller utilizing the Xchangeable Hub System (XHS), Vortex propellers feature high-performance blade geometry, precision balanced blades, and a high gloss powder coat. Vortex propellers utilize the XHS Hub Kits, making them interchangeable with the Mercury’s Flo- Torq II™ system. Recommended Boat Applications: Inflatables, Aluminum Consoles, Walleye Boats, Offshore Singles, Pontoons, Skiboats, Family Cruisers.