The RBX Interchangeable Hub seats to the propeller hub cavity in order to eliminate hub chatter and vibration while preventing spinning within the propeller. It features a one-piece rubber construction with anodized aluminum splines - no plastics to deteriorate. Hubs offer 10° deflection to reduce banging when shifting gears or hitting a submerged object. All RBX hubs are reusable if the propeller is damaged. Designed for use with the following: Evinrude/Johnson/BRP 90 and 115 HP (4-Stroke) (2002-07); 15 tooth spline 4-1/4" Gearcase, Suzuki DF 90 2001-08, DF 100 (2009 and Newer), DF 115 2001-12, (All 4-Stroke); 15 tooth spline 4-1/4" Gearcase.