This is a "Clamp On" Can taper. 1/4" Flare Hose Connection Heavy Duty Rubber Can Top Seal (see picture), not the cheap hard plastic type that leak no matter how hard you tighten them! It is good for all the freon cans with the "smooth" or flat tops.
******The warning light comes on when switched to plasma cutting or MMA mode, I have never used or tested the TIG mode but the light is not coming on if its on this setting when turned on. I had a problem before with the warning light coming on but it went away on its own and worked fine for several months. The light may go away again on its own or may have something loose inside or may need to be serviced.
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