[Limited] Frixion Point Knock Biz Erasable Ballpoint Pen / PilotThis is a stylish erasable ballpoint pen called the "Frixion Full Black Series," which is highly acclaimed among business users. It is the top model of the "Friction" series, featuring a sleek design with a unified black color for the pen body, rings, and various parts. Note: The compatible ink refill for this pen is the Frixion Point Knock Biz Black Ink Refill Pilot.