WeldingCity TIG Torch Accessory Kit AK4 Collet-Cup-Tungsten-Cap 1/16"-3/32"-1/8" for Torch 20 Series AK4 TIG torch accessory kit (AK4) for regular set-up in torch #20 series. 1 long back cap 41V24; 1 short back cap 41V33. 3 collets 1/16", 3/32" and 1/8" (13N22, 13N23 and 13N24). 3 collet bodies 1/16", 3/32" and 1/8" (13N27, 13N28 and 13N29) 3 Alumina ceramic cups #5, #6 and #7 (13N09, 13N10 and 13N11). 3 Thoriated (2%) Tungsten (Red) electrodes 1/16"x7", 3/32"x7" and 1/8"x7".