Solas 106 Rubex Hub KitSolas RBX106 Rubex Hub Kit For use with Rubex Interchangeable Hub System Propellers. Also works with Michigan Wheel, Mercury Flo Torq and Turning Point propellers with interchangeable hubs. Application Evinrude/Johnson/BRP; 40-75 HP (Large gearcase) 1968 & Newer, 13 Spline 4-1/4" Gearcase; 85-140 HP 1969 & Newer, 13 Spline 4-1/4" Gearcase; OMC/Cobra Sterndrives; Model 400 Cobra 1978-91, 13 Spline 4-1/4" Gearcase;