Yamaha Interchangeable Propeller Hub - 500 | Turning Point 11500000 Turning Point Propellers Yamaha Interchangeable Propeller Hub 11500000 Utilizing high-tech shock-absorbing polymers and a solid brass spindle, the Turning Point MasterGuard & MasterTorque hubs will not corrode or break like competing hubs and are covered by an industry-leading Lifetime Warranty. Each hub’s one-piece design ensures simple housing replacement, making a prop change quick and easy. Corrosion Resistant Materials - premium corrosion resistant brass splines Reduced Gear Shock & Engine/Drive Damage - shock absorbing hi-tech polymer cushion Easy to Install – clear and easy step by step directions coupled with minimal parts makes installation easy Increases Performance and HP - through barrel exhaust system maximizes exhaust Interchanges with other Manufacturers’ Propellers - upgrades and replaces Mercury® Flow-Torq®, Michigan Wheel® XHS®, Solas® Rubex™ hub kit system Turning Point Propellers Prop Wizard