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 33% when buying replacement propeller housing. MasterCard hubs are Re-usable 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. 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 cushions with lower unit protection. Easy to Install: Clear and easy step-by-step directions coupled with minimal parts makes installation easy. MasterGuard 200 Series Installation Kit for Engines with 2.5" Gearcase MasterCard Installation/Hub Kits carry the only “no questions asked” Lifetime Warranty in the WORLD! Hubs have no warranty restrictions, except for extreme commercial use. Saves a boater up to 33% on replacement propeller purchases (need to purchase prop housing only). One-piece design: durable marine Bronze with Over Molded Glass Filled Nylon for Long Life. Re-useable after a Prop Strike. Warranted even if the prop is Destroyed! Enhanced lower unit protection. Utilizes a specially designed keyway system and a hi-tech polymer designed to absorb shift shock and harmful vibrations. The small-diameter design allows for more exhaust flow and higher horsepower. Adapts to the OEM thrust washer and prop nut. Included accessories and parts: Hub assembly, prop nut spacer, and installation instructions. Installation Kits for Colman®, Evinrude®, Honda®, Johnson®, Mariner®, Mercury®, Nissan®, Parsun®, Suzuki®, Tohatsu®, & Yamaha® Outboards. Use Hustler propeller housings for 6-20hp engines with 2.5" gearcase.