Pilot MultiBall. Pilot MultiBall is a special pen that has been around for a while. The current version is a redesign released about 10 years ago, and it’s a modest looking pen with great applications. The pen is water-based pigment ink. It writes smooth, the body has a rubber grip, and it looks just a regular gel pen. However, the pen comes with a special ink, “M Ink”, which allows it to stay on smooth surfaces such as metal, glass and plastic. For our shop, we like to use it on washi tape. Many gel pens don’t write well on washi tape but this pen really stands out.