【New, Unused】Mitsubishi Uni-ball ZENTO Signature 0.5 Metallic Black Uni-ball ZENTO, a water-based ballpoint pen developed by Mitsubishi over a six-year period. This is a new line of ZENTO ink that pursues the comfort of writing. This product is the top-of-the-line "Signature" model with a magnetic cap, featuring a 0.5mm metallic black model. - Model Name: Mitsubishi Uni-ball ZENTO Signature - Color: Metallic Black - Ink Color: Black - Ball Diameter: 0.5mm - Features: Magnetic Cap