Complete set of copper nozzles for handheld laser welder. Set contents: butt weld nozzle, inner corner nozzle, outer corner nozzle, wire-feed nozzle, cutting nozzle, cleaning nozzle. Material copper, heat-resistant. Compatible with most handheld welding heads for 0.8-1.2mm wire. Service life of one nozzle 2-3 months under normal use. Change when the hole is deformed, excessive spatter, or the weld quality deteriorates. Different nozzles for different types of welds significantly improve the quality and speed of work.