Premium Construction: Made with special protective coating on aviation aluminum base, ensuring optimal conductivity and rust resistance for consistent welding High Temperature Resistance: Super to ordinary copper nozzle, this aviation aluminum construction withstands extreme heat with enhanced durability for longer service life in demanding welding conditions Effective Sludge: Specially designed alloy nozzle effectively solves the difficult problem of cleaning sludge during welding, sticky residues buildup and saving time on maintenance Wide Compatibility: Perfectly fit for 15AK welding systems, making it ideal for various professional and welding applications Welding: precisely engineered design delivers stable formation and smooth wire feeding for cleaner welds with reduced spatter and work efficiency, Manufacturer: KAHDGSS