A smooth alternative to the free-flowing ink of a fountain pen with the convenience of a roller ball. Gel ink writes smooth, exceptional lines. Cross® pen refills are guaranteed to provide high-quality writing results. Refill Format: Standard Ceramic Rollerball; Refill For Series: Cross® Selectip® Gel Ink Roller Ball Pens; Refill Tip Type: Conical; Refill Point Size Type: Medium.