Pentel GraphGear 500 Automatic Drafting Pencils - PG523E, PG525A, PG527C, PG529N, 1 for Each Pentel GraphGear 500 Automatic Drafting Pencils Include 1 PG523E, 1 PG525A, 1 PG527C & 1 PG529N Metallic mesh grip on a slim, beveled barrel 4mm fixed sleeve, Refillable PG523E: 0.3mm, extra-fine lines PG525A: 0.5mm, fine lines PG527C: 0.7mm, medium lines PG529N: 0.9mm, bold lines