The Pentel® Oh! Gel retractable gel pen features acid-free, permanent gel ink that delivers a memorably smooth writing experience. The latex-free grip provides extended comfort and control when writing. The stylish carbon fiber look gives this pen unique appeal. It is available with a 0.7mm metal tip that writes medium lines. The Oh! Gel pen is refillable with any color (black, red or blue) KFR7 refill.