Grex X40NS.10 (1.0mm) Nozzle Kit for X4000 Spray Gun Grex from $109.00 $129.00 Qty. Add to Cart SKU: GRX-X40NS-10 This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. This converts the Grex X400 Spray Gun to a 1.0 MM nozzle configuration. Includes nozzle, needle and nozzle cap. Tweet