Pentel Graphgear 500 Automatic Drafting Pencil,roulette Grip & Metal Body Model -0.3mm- & Pentel Ain Clic Retractable Pen-type Triangle Eraser Professional Value Set The pencil for the pro whom the world accepts It is the same structure as Graph Gear 1000 except the portions of a grip and a clip. It was attached in popular eraser .[Ain Clic] of the holder type.(Triangle Body) The eraser can use properly and erase a fine point and a large point of angle or ceter