The Stabilo Write-4-All pens are designed to write on all that you can think of. The plastic tip on these pens is built to be harder than most marker tips, allowing you to write with these markers quite clearly on almost any surface. They are hearty enough to be reliable under extreme conditions of heat or cold, but have a non-corrosive ink which means they can also write on delicate surfaces such as CDs and DVDs. The Stabilo Write-4-All pens come in three tip sizes, from a super-fine 0.4mm tip, to a fine 0.77mm tip and a medium 1.0mm tip. They are also available in a choice of black, blue, red or green inks. These versatile pens will give you the colour you want, anywhere you need.