I'm looking to sell this quickly, so I'm open to price negotiations. This is a Pilot Automac E. The pen works by pointing the nib downwards towards a desk or paper and moving the piston. This extends the lead, allowing you to write. It's quite difficult to understand how to use it, as there are settings for clicking, lead locking (when extending the lead), and lead-free locking. The color may differ from the photos. By the way, it's incredibly difficult to write with. Mechanical pencil Sharp pencil Sharp pencil Discontinued Discontinued Uchida UCHIDA Mechanica Pentel