Pentel PG5 custom body, Hirose Teppitsu-do hexagonal aluminum. The knock button and hardness indicator window are custom parts. The clip is genuine. The original parts are also included. Both are popular and have been sold out. The writing feel gives a sense of rigidity from the machined aluminum. Please refrain from purchasing if you are sensitive to details. Operation has been confirmed and it works normally. Price negotiations and immediate purchase are possible. Type...Mechanical pencil body Type...Drafting mechanical pencil Body material...Metal