Iwata Airbrush Replacement Part I-535-1B Fluid Head Nozzle 0.18 mm Iwata from $49.69 $66.25 Qty. Add to Cart SKU: I-535-1B This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. This is the I-535-1B Fluid Head Nozzle 0.18 mm for the Iwata Custom Micron CM-B and CM-SB. Tweet