I had to fill a few hundred feet of concrete joints and this saved my ass. Did the job much faster and got rid of the task of dispensing sealant. I also bought a 20 ounce sausage tube conversion kit to use chute tubes with Sikaflex sealant. I used the 30 ounce dispenser that comes with the gun when building a retaining wall out of decorative cinder blocks and it worked well for the job too. These two works paid for themselves, I'm glad I made the purchase. If you have doubts about the purchase, then I say go for it. I've had DeWalt batteries before so the decision was easy, the DeWalt is better than any competing model I've looked at and while it's not cheap I'm glad I bought it.
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