3D model designed by Sedowynt using Autodesk Fusion (360) Personal License. The knob has no thread, just glues or press-fits on. Make sure to sand and clean lever before installation. The product in the picture was printed from PLA, although the original is rubber. If you have flexible filament, you could use that for a more original look and feel.
lever_knob.stl | 2.7MB |