The file '3.17mm To 5mm Motor Shaft Adapter, Conversion 3D Printer Model' is (STL) file type, size is 900.5KB.
Here is a solution for when you have a 5mm motor pinion gear but a 3.17mm shaft motor. This solution will help your 3.17mm motor shaft fit the 5.00mm gear. Give it a try!
3.17mm_to_5.00mm_shaft_adapter.STL | 2.1MB |