Large Gas Saver Push-On Nozzles for 9/20 (2-Series) Torches

We typically use the clear Pyrex nozzles, which work awesome, we purchased these because they are priced a little better than the clear nozzles, and we do not always need to see through the nozzle. However these weld terrible, using the same welder and swapping from the clear Pyrex to these the weld quality is extremely poor, for same reason these nozzles seem to allow contamination, as if they leak, then switch back to the Pyrex and the weld quality is great again. _________________________________________ Richard: Thank you for the feedback! We're really sorry to hear that they didn't perform as expected. When we get those Alumina nozzles back from you, we'll test them to verify if you've received defective cups and see if we can re-create your results with the comparative testing.