Laser NozzleMaterial:High Quality CopperModel: S28-A Single: Diameter 28mm ,single layerCaliber: 1.0 /1.2 /1.5 /2.0 /2.5 /3.0 /3.5 /4.0If the caliber you need is not on the link, please contact Jason directly.S28-A Single - Fiber Laser Cutting Nozzle - 6000 - 12000wS28-A Single LayerSelectQuantity*