Turning Point Propellers Kit 509 Hub. This kit is compatible with Hustler and Express Series Propellers for select Suzuki & Johnson 40-150hp 15-spline shaft engines with a 4.25" gearcase. Turning Point is the only company to offer MasterGuard Installation kits and prop housings for 6-300+hp engines with a Lifetime Warranty Hub. Boaters save up to 38percent 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 enhanced lower 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. Covered by US Patent #6471481 #6685432 #7717678 and worldwide patents with additional patents pending. Refer to manufacturer recommendations to ensure a proper fit before purchasing. Specifications for Turning Point Propellers Hub Kit 509: Manufacturer: Turning Point Propellers Color: Black Features of Turning Point Propellers Hub Kit 509 Propeller Hub Installation Kit 15-Tooth Spline Hub Compatible with Hustler and Express Series Propellers For select Suzuki & Johnson 40-150hp 15-spline shaft engines with a 4.25" gearcase Refer to manufacturer recommendations to ensure a proper fit before purchasing Package Contents: Turning Point Propellers Hub Kit 509 Turning Point Propellers 11500900: Kit 509 Hub