One Dozen Assorted Color Letter Opener Pen With Hidden Knife Set - Tophatter's Army Products & Self DefenseThis time we have our favorite, the hidden pen knives. Each pen included in this set (12 total) has a colorful Silver, Red and Camo finish, these is a 2 inch blade that is half serrated to cut away at anything when you're tired of writing. These are three different colors in this set! Features: Assorted color set of 12 Colors include: Silver, Red and Camo Each pen has a 5. 5 inch overall length Pen have a 2 inch blade length Half serrated blade