Each heavy-duty nozzle is designed with the intent to be both long-lasting and durable. Item: Nozzle Series: TOUGH LOCK(TM) Material: Copper Size: 1/8" Recess Connection Style: Slip-On For MIG Guns: Tregaskiss Robotic CA3, TA3, G2, ThruArm G2, G1 Water-Cooled, Automatic MIG Guns, Bernard BTB MIG Guns, 250 Amp S-Gun(TM) MIG Gun, TGX MIG Guns, T-Gun(TM) Water-Cooled MIG Guns, Clean Air(TM) Fume Extraction Guns Bore Dia. (In.): 5/8 Bore (mm): 15.875 Style: Heavy Duty Type: Heavy Duty, Tapered For Use With: TOUGH LOCK(TM) Contact Tips and Retaining Heads