Tapered Contact Tip, Compatible with Brand Tregaskiss, Series TOUGH LOCK, Compatible with Series BTB, Clean Air, TGX, Tough , Tip Shape Tapered, Duty Rating Standard Duty, Maximum Wire Diameter 0.035 in, Connection Type Threaded, For Nozzle Series Tough Lock, For Gas Diffuser Number 404-14, 404-18, Welding Processes MIG Welding (GMAW), Material Copper, Outside Diameter 0.25 in