used to dispense liquid soap from an old screw top wine bottle. should fit most screw top wine bottle. might also fit PET bottle of various size. let me know if it does. comes with a gasket that i printed in TPU. top part was printed in PLA but other rigid filament should do. need support for under the screw when printing. i used organic  support and it was not too bad for cleaning.

edit; after trying it, i found the first design to be lacking flow, i designed a second one with a lot bigger hole but no ‘’guard drip''. the same gasket can be used for both.

edit #2; i decided to add a guard drip. i am removing the old version with a small hole that did not work