Holds two regular size inhalers - great for organizing bedside medicine. I prefer this holder to just having the inhalers laying around on a countertop or nightstand. This at least reigns in the mess. Sure - it would be better to not have these things at all... but failing that - one can at least be organized.I'm playing around with a 1mm nozzle - and printed this at that resolution in PLA. Worked surprisingly well.