I wanted it to work so bad I bought it twice. At first I made the mistake of following the instructions on the box without realizing there was a video. The video shows how SO EASY it is to fill the syringe with sealant. It is not. Unless you might be Hercules. The very small amount I was able to draw into the syringe (which appeared to be airtight) did create a thinner seal line than a standard caulking gun, but it wasn't worth the disappointment. Also a silly amount of parts to go with it.
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