Michigan Wheels high performance aluminum propeller utilizing XHS/XHS II Xchangeable Hub System. Featuring high performance blade geometry, precision balanced blades, high gloss powder coat and interchangeability with the Mercury Flo-Torq II system, the Vortex XHS/XHS II is a great choice for a replacement or spare propeller for boaters. They are recommended for the following applications: inflatables, aluminum consoles, walleye boats, offshore singles, pontoons, skiboats, and family cruisers.