"The SOLAS RBX-102B Rubex Propeller E-Series Interchangeable Hub Kit seats tightly to the propeller hub cavity to eliminate hub chatter and vibration. Its built-in 10 deflection reduces banging when shifting gears or when hitting a submerged object. Reusable if propeller is damaged. Hub will not spin in propeller. Bronze splines. 1-piece rubber construction with no plastics to deteriorate. Interchangeable with Mercury Flo-Torque and Michigan Vortex propellers. All necessary hardware included. 15-tooth spline 4-1/4"" gearcase. This boat propeller hub kit from Solas fits with the following Mercury/Mariner/Mercruiser applications: 40-60hp Bigfoot, 15-tooth spline 4-1/4"" gearcase; 40-140hp (except 135 HP) V4 gearcase 1978 and newer; 90hp, 115hp (Command thrust) 2014 and newer 15-tooth spline 4-3/4"" gearcase; 135hp 1987 and newer 15-tooth spline 4-3/4"" gearcase; 150-300hp 1978 and newer 15-tooth spline 4-3/4"" gearcase; and Mercruiser Alpha One and Bravo One (less than 400hp). It also fits these Yamaha applications: 80-140hp 1977-83, 15-tooth spline 4-1/4"" gearcase; and 150-175hp 1978-83 15-tooth spline 4-3/4"" gearcase. It fits these Honda applications: BF 75-90 1995-98, 15-tooth spline 4-1/4"" gearcase. And it fits with the following Force applications: 75-150hp (through-hub exhaust) 1995-99, 15-tooth spline 4-3/4"" gearcase; 85-150 HP (Dual Exhaust), 15-tooth spline 4-3/4"" gearcase. Seats tightly to eliminate hub chatter and vibration 1-piece rubber construction Built-in 10 deflection All hardware included"