Nozzle Compatible with Brand TOUGH LOCK Series TOUGH LOCK Compatible with Series BTB Clean Air G1 Water-Cooled G2 Robotic CA3 S-Gun T-Gun Water-Cooled TA3 TGX ThruArm G2 Bore Diameter 3/4 in Connection Type Slip-On Nozzle to Tip Relationship 1/8 in Recess Nozzle Shape Straight Material Copper Insulation Type Fiberglass Insulators Duty Rating Standard Duty For Gas Diffuser Number 404-26 404-32 Welding Processes MIG Welding (GMAW)