TIG Spare Parts 1. tig - welding torches for good-looking ... due to fatigue (all models).2.Available gas valve improves shielding gas control .3.Flexible neck improves torch control ... in limited-access joints using power sources without gas solenoids (WP-9FV).6.Pencil-style model requires ... .Collet body:13N25, 13N26, 13N27, 13N28, 13N29,12.Gas lens collet body:45V41, 45V42, 45V43, 45V44, 45V4513.Ceramic ...