Whether student or professional, Zebra offers a wide selection of mechanical pencils, each thoughtfully designed to meet your needs. If you're looking for balance and consistency of lines, the DelGuard mechanical pencil will not disappoint. DelGuard's double spring, patent-pending mechanism ensures lead is secure and protected from breakage every time you click to advance your lead; for best results click twice! Patented technology eliminates lead breakage regardless of writing styles and angles, resulting in an enjoyable writing experience uninterrupted by broken lead. The DelGuard Mechanical Pencil features a lightweight barrel with a textured grip for enhanced comfort. Provides a precise and enjoyable writing experience. The recommended refills for this mechanical pen are Zebra's DelGuard Unbreakable Lead Refill (89881) and Zebra's DelGuard Eraser Refill (83225).