Gel Pen - FriXion® Ball Clicker Retractable Erasable Pen - 0.5 mm is a practical writing instrument for offices, schools, reception areas, home offices and supply rooms across Canada. Frixion® lets you write, erase, re-write. Thermo-sensitive gel ink disappears. Key details include 0.5 mm point. It is suited to everyday note-taking, forms, labels, meeting notes and classroom or workplace writing tasks.