Pentel GraphGear 1000 & 500 Drafting Pencils Pencils come in 0.3 mm, 0.5 mm, 0.7 mm, and 0.9mm.This full body aluminum professional drafting pencil has a fully retractable tip and a balanced body that makes it a joy to write/draw with. Pental graphgear also features a binder clip that can clip onto thick objects. The rubber textured grip gives you a comfortable and secure hold.