Turning Point is the only company to offer MasterGuardA(R) Installation kits and prop housings for 6-300+hp engines with a Lifetime Warranty Hub. Boaters save up to 33% when buying a replacement propeller housing. MasterGuard hubs are Re-useable most of the time after a prop strike and if not they are Warrantied even if the prop is Destroyed. These hubs offer enhancedlower unit protection. Turning Point s MasterGuard Hubs are engineered to withstand typical wear and tear over time without risk of spinning or failure under normal operational use. Turning Point s unique patented one piece hub with glass filled nylon over durable marine bronze splines eliminates failures commonly seen in multi-part sleeve and spline designs and pressed-in rubber hub systems. Eliminate Hub System Vibration and Chatter: Innovative one piece design reduces the number of parts and eliminates failures commonly seen in multi-part hub systems. Eliminate Hub Cracking and Failure: The glass reinforced high-tech polymer construction increases flexibility eliminating potential material stress fractures. Corrosion Resistant Materials: Premium corrosion resistant durable marine bronze splines. Reduce Gear Shock and Engine/Drive Damage: MasterGuard hubs offer Shock absorbing high-tech polymer cushion with lower unit protection. Easy to Install: Clear and easy step-by-step directions coupled with minimal parts makes installation easy.