This is a 6 x 32mm and 3 x 38mm medicine bottle holder. It is friction fit and I designed this to sit in the bottom of my harbor freight tool bag to keep parts organized. You can even do your own labels for the top of the covers should you wish to do so. Included is the .step and .f3d files for you to customize as necessary. If you create other variations, please share and respect the orginal license.