Contact Tip Compatible with Brand Lincoln Series T14050 Compatible with Model K112 K113-2 K129 K231 K239 K391 Compatible with Series Full Auto Sub-Arc/Semi Auto Sub-Arc Tip Shape Cylindrical Duty Rating Standard Duty Maximum Wire Diameter 0.072 in Connection Type Threaded For Nozzle Series T10 Welding Processes MIG Welding (GMAW) Connection Thread Size 5/16 In.-18 Inside Diameter 0.081 in Outside Diameter 0.3125 in Overall Length 0.875 in Package Quantity 10