Sold in a pack of 5, Kaweco D1 ballpoint refills fit Kaweco Sport Ballpoint pens and other manufacturer's compact and multi-action ballpoints. Choose from fine (0.8mm), medium (1.0mm), and broad (1.2mm) point sizes in black or blue ink, or needle point (0.5mm - 2-pack, black ink only), medium (1.0mm) in red ink, and broad (1.2mm) in orange.