I'm renovating an entire house and needed a base adhesive for a few small things. I decided to try this. I'm not very strong so my friend put it in my caulking gun. I can't put the pen to it, but I thought of a trick. The nozzle unscrews, so I take it off and twist the big silver thing on the end to push it out. I only use it for small jobs so it hasn't become a problem yet. I've added some decorations to my house and am currently on the east coast of Florida waiting for Hurricane Dorian on 09/02/19. This will be the real test of this product. Will be updated after the storm.