I'm a bit disappointed with this product, every time you want to use a different piece of cartridge the old one has to be removed which means all the tape comes off. To make sure every part you use, especially a small one, stays in one place, the company sends a large roll of duct tape. Then the end part must be glued to the end of the sealing hose. If you apply pressure while closing, the end piece will start to wobble. There are also some really big extensions that I only use for smaller areas like the bathroom and tiles. I would not recommend this product, you are better off using your finger and a paper towel to smooth out the line.
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