Scienode Precitec Dia.28mm H15 Caliber 0.8-6.0 Single/Double Layers Welding Laser Nozzles for Fiber Laser Cutting CNC Machine
https://www.vogueparade.com/shopping/EN/1427/1/1005003510902213/scienode-precitec-dia28mm-h15-caliber-08-60-singledouble-layers-welding-laser-nozzles-for-fiber-laser-cutting-cnc-machine//