After considering a clone of the mini ductor, I decided to go with this one. I only tried it to test, and it works as advertised. The only thing I would do with it to improve it would be to add a switch for the cooling fan. It would be nice if it could be left on to keep the unit cooler. Other than that it seems ok. I read that it is normal for the tool to be rather warm while plugged in, and it is. I think a fan being on would help that quite a bit. Time will tell if it was a smart buy or not.