Thanks to the erasable thermo-sensitive ink: Write, Erase and Repeat! Refilling is economical and more respectful of the environment. Set of 3 violet refillsDon't despair when your fantastic FriXion Ball or Clicker pen runs out, simply refill it with the FRIXION REFILLS and carry on writing! A set of 3 refills suitable for both FriXion Ball and FriXion Clicker 0.7 pensBut you can even use this refill for your FriXion Point! Refills will help you save money over buying new pens, and are also fabulously eco-friendly so there really is no excuse not to refill!Choose your favourite ink colours among 11 available!Perfect for getting back to school or even back to the office. With this refill pack you can continue writing for as long as your ideas keep flowing... #Happywriting Features Stroke width 0.35 mm Tip width 0.7 mm Writing colours Violet