Whether you're colour-coding, writing notes or leaving someone a message, these Pilot Frixion Colors felt pens are right for the job! Frixion ink can be erased by using the eraser on the top of the felt pen's cap, and you can write and draw over the erased part right away. You won't have to limit yourself because of drawing mistakes again!, The black ink in these Pilot Frixion Colors felt pens is rich in colour and glides across the page. This pack of Frixion Colors pens contains 12 pens with a line width of 0.6 mm.