This is a set of 5 CHECK PEN-α pens in blue and pink. Four of the pens are unused and have been stored at home. One blue pen has been used. It still works, but the tip is slightly squashed and writes thicker (see photo 2). I've put masking tape on it so you can tell it's been used. For those who don't mind. Great for entrance exams, studying, etc. Check pens