The Pentel Oh! Gel K497C gel pen offers a smooth writing experience with its acid-free, permanent gel ink that creates clean, medium lines. Designed with a crystal-clear, diamond-cut top click for added appeal, this pen also features a soft, latex-free grip for extended writing comfort. An extra-large, metal clip allows for easy attachment to pockets and notebooks. This gel pen is refillable with Pentel KFRS7 refills, making it a sustainable choice for everyday use.