The Pentel RSVP Colors ballpoint pen is a sturdy well-balanced pen. This capped pen is designed for extended periods of use. The exclusive ComfortZone latex-free grip is designed to reduce writing fatigue. The colored barrel matches the ink supply inside. Durable stainless steel tip delivers a consistent line without skipping. The 0.7mm tip (BK90CR) writes fine lines; 1.0mm (BK91CR) writes medium lines. The long barrel holds more ink than the competition and can write for almost a mile! Select the BKL7 (fine) or BKL10 (medium) refills which are available in a variety of colors.