Rather easy, I guess. The product has a little gash, blemish? Thus the loss of a star on quality. I'm not sure if it'll cause issues later, but for now, it fits where it should, as it should and that little ding isn't really in the way. It's for my Azeron. A restrictor ring. It'll break eventually as is the nature of it, but I WILL order it again from this manufacturer. Got it to me quick. (The only reason I'm just now getting it is because the post office did something weird.)