The file 'Bifold Door Top Roller (7/8′ Outer Diameter, 1/4′ Hole) 3D Printer Model' is (stl) file type, size is 4.4KB.
Top roller for bifold pantry door with outer diameter of 7/8' and inner diameter of 1/4'.
Here are few other Bifold rollers I found on Thingiverse if you need a different model
