The Pentel Graph Gear 1000 Automatic Drafting Pencil PENPG1017C features an extra-long 4mm fixed sleeve for precise drafting. Its heavy spring mechanism allows for easy retraction of the tip, while the finely chiseled metallic grip is inlaid with soft rubber pads for added comfort. This automatic pencil is refillable with Pentel's Super Hi-Polymer Lead and Z21 refill eraser, ensuring you can maintain your drafting needs efficiently.