Zebra Pen Delguard #2 Mechanical Pencil Lead Refill, 0.5 mm, HB, Graphite, 12 Leads per Tube;

The mechanical pencil you’ve been waiting for, featuring a clever patent-pending design. Resists lead breakage and clogging. Click once, twice, three times, unbreakable! take away your most common frustration of fine point mechanical pencils broken lead! DelGuard’s double spring patent-pending mechanism ensures lead is secure adding protection from breakage with all writing styles, both vertically or on an angle. Provides a precise and enjoyable writing experience. Try it, we dare you!