I had to buy these to try them properly. They mostly work as advertised, which is a good thing. I found them awkward to use. The main advantage is that they carry the caulking gun at a distance, making it easier to get into tight spots. However, the extensions are too flexible for my purposes, you need one hand to hold the hose, and it just doesn't work when you have to operate the gun at the same time. I would almost prefer the extensions to be rigid and possibly different lengths for convenience. For delicate applications you end up washing off a lot of unused sealant for what it's worth. Others may find these objections irrelevant.
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