The Pentel® RSVP 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 transparent barrel allows you to see the ink supply. Durable tip delivers a consistent line without skipping. The 0.7mm tip (BK90) writes fine lines; 1.0mm (BK91) 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. Includes Pentel’s Limited Lifetime Warranty. R.S.V.P. Ballpoint Stick Pens feature an ergonomic barrel design with a soft, latex-free, rubberized, Comfort Zone grip. Refillable pen delivers exceptional balance, comfort and control for fatigue-free writing. Features a Latex-free Comfort Zone Grip for exceptional balance, comfort, and control. Stainless steel tip provides extended durability. Dark, vivid ink color of each pen is indicated by the stylish barrel color. Writes smooth lines of consistent density. Conveniently refillable with Pentel BKL10 ink refill.