The Pentel Quicker Clicker Mechanical Pencil PENPD345A features a unique side-action lead advance button that allows for lead advancement without changing your writing position. This pencil is designed with a latex-free rubber grip for comfort, a large stationary eraser, a stationary tip, and a fixed sleeve. It is refillable with Pentel Super Hi-Polymer Lead and PDE-1 large refill eraser, ensuring long-lasting use.