1)material:copper,red copper 2)CE & ISO9001:2000 cert 3)models:180a,200a,350a,500a 4)High quality Panasonic 500A welding torch nozzle 1)material:copper,red copper 2)CE & ISO9001:2000 cert 3)models:180a,200a,350a,500a 4)High quality it is not original Panasonic products, but copy one.any samples can be copied here. Panasonic 500A welding torch nozzle