I have to ring in on SuperT-I have a few mods and none compare to Davids workmanship and material choice. It is the one mod (I have 2 of his) that when you pick it up, it feels solid, because it is solid. The threads are machined perfectly and will last a very long time, a little Noalox care goes a long way. Drop it and the unit will be fine-I honestly believe you could run over it with a car and it would be fine-LOL. You would definitely loose the atomizer however, the unit other than scratched would work.