With the highly specialized Iwata Professional Maintenance Tools, assembling and reassembling airbrush nozzles, caps, needle packings, O-rings and air valves is quick and easy. The kit comes with a two-sided Iwata Air Valve Guide Wrench, Soft Jaw Pliers, Needle Packing Screwdrivers (for 1.2mm and 1.4mm diameter needles), Nozzle Wrench, a protective Needle Tube and easy-to-follow instructions with diagrams. All of the items fit securely in the elastic straps within the soft-sided zippered case, with the case having extra room to carry up to three airbrushes. An inner, zipper pouch is ideal for containing small replacement parts. It’s perfect for artists in the studio and on the go.