This set is very interesting. The collet bodies thread into a conventional TIG 17 gas-cooled torch but fit into Type 20 water-cooled cups. Well, if there are such converters. So far I have only used the 3/32 gas lens on 308 stainless steel with glass and ceramic cups. No problem. This is great for making your regular 17 cutting system in the cutting head a lot less bulky. I don't have a flashlight for 18 or 26. Only water cooled 20 and air/gas cooled 17 so I can't confirm fitting on any torch other than the standard 17. I don't see anything wrong with the kit at this price.
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