18 of 500 (3.2[%])pens came with a double image or had broken clips. Fortunately the bad pens were on top so that we saw we needed to go through them all. I had to go through each pen to make sure we did not give out a bad pen, no fun. Sounds picky, but the quality of your pen is a reflection on our company, so we want to make sure we our giving out the ones that are not messed up. Other than that, we love them.