These ergonomically designed pens feature a sleek black non-slip surface over the entire shaft. Easy-to-grip, the Bl@ck+ pens are ideal for professionals and frequent users as the unique design allows for relaxed fatigue-free writing. This set feature high quality 0.5mm medium nickel silver rollerball tips and a free-ink system for smooth writing. Details:Black and blue ink0.5mm tip2 pensErgonomically designed, easy-to-grip