Convert your 17 & 26 series tig torch to a JUMBO setup! This Jumbo kit fits all 17 & 26 series air cooled torches and 18 series water cooled torch including Lincoln and Miller torches. (2) of each Large ceramic cups #6, #8 #10 #12; (4)1/8 3.2mm Jumbo TIG Large Diameter Gas Lens 995795, (4)1/8 3,2mm TIG Collets 10N25, (2) Gas len insulator 54N63 (2)Long Back Caps (2)Medium Back Caps (2)Small Back Caps