Much cheaper than the E3 tungsten I buy at my local Airgas store. I haven't used it yet, so I can't report how it works. I will update when that happens. One thing to note, one reviewer tried to blame this on an unfortunate x-ray of pipe welds: I have about 12 years of experience welding critical pipe welds, and I can say I don't think that could be the case. . Tungsten inclusions can occur with any type of tungsten electrode and are largely related to the operator's technique rather than the type of electrode alloy.