Sometimes in the work you have to apply glue or sealant in a certain way and these devices should help to solve the problem.
These nozzle spouts are removable and are consumable. You don't need a lot of time and material to print them. But that the glue does not dry in the Neck, close it with a Cap.
Nozzle_flat_7mm & guide is provided to apply the adhesive or sealant exactly on the edge, with a certain margin from the edge. The indent can be adjusted by cutting the edge of the guide. However, if you print PLA, keep in mind that this plastic is brittle and a metal file will help you better for cutting.
In the video, I tried to show how to apply glue to each of the nozzles.