Pentel GraphGear 500 Automatic Drafting Pencil (0.5mm) - Black - Anderson Pens, Inc.
Amazon.com : Pentel Graph Gear 500 Automatic Drafting Pencil with Lead and Mini Eraser, 0.5 mm (PG525LEBP),Black,1 Pack w/ Lead & Eraser : Mechanical Pencils : Office Products
Pentel® GraphGear 500 Mechanical Drafting Pencil Set, 3 pc - Pick 'n Save
Pentel "Graph Gear" (500 Series) Automatic Drafting Pencils – K. A. Artist Shop