Type of writing instrument: Mechanical pencil Pen function/material: Knock type Ink color: 1 color This is a 30th-anniversary limited edition Dr. Grip. New, unused, and unopened. I have kept it as a part of my collection. Dr. Grip, Dokuguri, discontinued item, sold-out item, limited edition, reproduction model, black, matte black, black, 30th anniversary, mechanical pencil, sharp pen, discontinued, limited color, 30th premium color, original color, 90's popular color, cyber neon color, relaxing color, street color, premium color, writing instrument, pilot, Dr. GRIP