Perfume holder (Different sizes)

I´ve been looking for a solution to not have my perfume samples lying around so they don´t leak.

This stepped design utilizes 16mm/14,3mm/12,3mm/11,9mm diameters for all sorts of different vial sizes. They are all 0,4mm bigger than the measurement on the vials I have on hand, leading to a very smoth fit when printed.