The file '608 Ball Bearing Pulley 3D Printer Model' is (STL) file type, size is 126.2KB.
Apparently it's hard to find pulleys that turn well. I dunno what kind of load these will handle, but they look neat and the bearing press fits into the pulley nicely (press fitting best done while the plastic is still warm).
Part1.STL | 464.2KB | |
Part1sml.STL | 103.2KB | |
Part2.STL | 514.7KB |