Its junk- ok maybe not

The absolutely first time I used it was today, and the jaw broke. Of course I ordered it too long ago to return it to Amazon. Update: so I was too late to just return it through Amazon, but they put me in touch with the seller (Iwiss). Although the rep seemed to think it must have been something that I did, they sent me a new tool. I have used it to install two 1" clamps and it worked just fine. I think I just got a bad one and I am happy that they stand behind their product. It wasn't cheap and I expect it to last years since I'm not a plumber by trade.

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