After downloading and printing various models of an electric bike throttle thumb adapter, I decided to take a little time and start from scratch to create exactly what I needed. This was made to fit my Rad Power Bike throttle, most electric bikes have the same diameter of throttle unit and this model should fit others on the market, the unit i made has a longer and wider paddle for a more comfortable feel and control, was made from scratch in the wonderful TinkerCad program. At this time this seems to be the only model design program that this old retired brain can handle. made with Bambu Lab Basic PETG to withstand some heat and UV rays. A 3mm X 20mm socket head screw and a 3mm lock nut keep this tight to the original throttle. Thanks for looking and have fun printing