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 140 HP (4-Stroke) (2002-07); 15 tooth spline 4-1/4" Gearcase, Suzuki DF 115A and 140A (2013 and Newer), DF 140 (2002-12), (All 4-Stroke); 15 tooth spline 4-1/4" Gearcase.