This Pentel WOW! pencil features a unique triangular-shaped barrel to keep the pencil from rolling off desks. The distinctive design stands out in a crowd. The grip on the see-through barrel makes it easy to hold. Use the handy clip to attach to pockets notebooks and more. Fully retractable tip protects pockets and purses. With the sliding sleeve technology you can keep writing even if your lead breaks. The eraser is capped to protect the surface and is refillable with Pentel Z2-1 eraser refills. Retractable tip pencil boasts a 0.5 mm lead for clean lines and distinctive marks. See-through barrel lets you see how much lead remains. Triangular-shaped barrel helps keep the pencil from rolling away. Capped eraser protects the surface and can be refilled. Refillable mechanical pencil design for reusability. This black barrel pen is versatile.