Vortex is a high performance aluminum propeller that utilizes the XHS Xchangeable hub system. The Vortex propeller features high performance blade geometry, precision-balanced blades, and high gloss powder coat. This propeller's blade design is engineered to enhance hole shot and increase cruise speed without sacrificing top-end speed. The XHS Xchangeable hub system makes the Vortex interchangeable with the Mercury Flo-Torq II system. Great choice for a replacement or spare propeller for boaters. Propeller and Hub Kit sold separately. Michigan Wheel Vortex XHS Propellers must be used with XHS hub system or Mercury Flo-Torq hub system. This Vortex XHS Propeller is the prop housing and blades only.• XHS Prop Series D: For use on 20-70 HP Engines• Michigan Vortex Part #: 992404• 3-Blade Aluminum• Diameter: 10.375"• Pitch: 11"• Standard right hand rotation High gloss powder coat Engineered to enhance hole shot Hub kit required | Vortex 3-Blade Prop, Exchangeable Hub / Aluminum, 10.375 dia x 11 RH