3D Printed Paper Towel Adapter

I don’t know the details, but wherever it was that we used to order paper towels from no longer works. The closest we have to the rolls of paper towel that fits into the paper towel dispensers is the correct width, but the inner diameter of the tubes is far too large. I designed a 2 stage adapter that fits on both ends of the paper towel tube and allows the dispenser to function as intended.