These drafting pencils are great for template work technical drawings 4mm fixed sleeve with metallic-mesh grip delivers precision and control. Design offers a top click, stationary eraser and tip. Refillable with Pentel Super Hi-Polymer Lead and Z21 refill eraser. Pentel Pencils part of a large selection of office supplies. Pentel(R) Graph Gear 500 Automatic Drafting Pencils, 0.7mm, Blue Barrel is one of many Mechanical Pencils available through Office Depot. Made by Pentel.