Power Tank™ Retractable Ballpoint Pen - 1.0 mm, Black is a practical writing instrument for offices, schools, reception areas, home offices and supply rooms across Canada. Pressurized ink. Writes on wet surfaces, in cold temperatures and even upside down. 1.0 mm point. Sold by each. Key details include 1.0 mm point, black ink or finish. It is suited to everyday note-taking, forms, labels, meeting notes and classroom or workplace writing tasks.