The exclusive Cushion Ball Tip of these Rolling Writer pens adjusts to each user's writing style, offering comfort and efficiency. Pentel pens with quick-drying ink help you keep your writing looking as it should. Tip fine tunes, depending on your pressure. For a clean, consistent line - all the time. The sturdy tip applies ink with the smoothness of a fountain pen and the firmness of a ballpoint. It's strong enough to penetrate carbons! 0.8 mm medium point for accurate, fine lines. The 0.8 mm point lays down razor-sharp lines of rich, vivid liquid ink. Fast-drying ink resists smearing. Velvety liquid ink glides across the page but dries before your hand has a chance to smudge it! Sleek design - a pleasure to hold. The shiny barrel is contoured for a more natural feel in your fingers. Sure locking cap protects the tip and includes a handy metal pocket clip. Nonrefillable. Medium-point, blue-ink pens offer striking lines.