Suitable for professional and most airbrush . Easy to install. In this airbrush part kit have 1 pc of 0.2mm airbrush nozzle, needle and airbrush nozzle cap; 1pc of 0.3mm air brush nozzle, needle and nozzle cap; 1 pc of 0.5mm airbrush kit nozzle, needle and nozzle cap; 1 pc of nozzle wrench. Nozzle and nozzle cap is made of brass; Needle is made of stainless steel. 0.2 mm nozzle should be work with 0.2 mm nozzle cap and 0.2 mm needle; 0.3 mm must be work with 0.3 mm; 0.5 mm needle to be work with 0.5 mm.