The Apollo 4-Blade propeller is designed to improve holeshot on heavier loads. This propeller is ideal for pulling/towing in water sports. High performance blade geometry, high luster finish, utilization of XHS/XHS II hub kit, and interchangeability with Mercury's Flo-Torq II hub system makes the Apollo 4-Blade the perfect propeller for a wide range of boats. They are recommended for the following applications: aluminum consoles, bay boats, walleye boats, offshore singles and duals, sportboat singles and duals, and skiboats.