Iwata Precision Nozzle Wrench allows you to remove and tighten your airbrush nozzle without overtightening. The Iwata Nozzle Wrench reduces torque on the nozzle threads helping eliminate damage. The Iwata Nozzle Wrench works on all Iwata and Neo airbrushes except the Iwata Eclipse Series and the Neo TRN 2 Side-Feed Trigger Airbrushes