I was getting a lot of bubbling in the paint pot of the airbrush with no paint coming out of the brush. Upon checking the nozzle it had a long crack along one side. I ordered a replacement and problem solved. Although it may seem a little expensive for such a tiny part, replacing the whole airbrush would cost way more. The crack was also caused by my user error and could have been avoided. Likely caused because I pushed the needle in too hard and/or did not clean the airbrush, in particular the needle, properly causing parts to bind with dried paint. Very happy with this part and very glad I bought it.