Yes. I'm not a pro, but I have tennis elbow. This tool has helped me putty the seams and window trim this year, and it's been pretty easy on my tennis elbow. I have to admit it's nice not to break a single bead to put those long stitches back in place. This continues until the sealant tube is empty. There are 5 speed modes, but I rarely go above 2. The difference in speed between 1 and 2 is quite large. With the 5th mode, a full tube of sealant is emptied in seconds. Get a hanging clip and also consider a sausage gun adapter if you're a pro.
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