Slider Edge Ballpoint Pens - Black, Pack of 10 is a practical writing instrument for offices, schools, reception areas, home offices and supply rooms across Canada. Viscoglide® technology. Black ink waterproof to ink standard ISO 12757-2. Ink dries quickly and is smudge proof when highlighting it later on. Rubberized three-edged barrel. Key details include black ink or finish, pack of 10. It is suited to everyday note-taking, forms, labels, meeting notes and classroom or workplace writing tasks.