Lincoln Electric KP4749-116-B10 TIG Torch Collets & Collet Bodies; Product Type: Collet ; Hole Diameter: 0.0630 ; Material: Copper Alloy ; For Use With: 9/20 TIG Torches using 1/16" Tungsten Electrodes; 9/20 TIG Torches using 1/16" Tungsten Electrode