Mitsubishi Pencil Uni Ball One Refill, 0.5mm, Black, UMR 05S

Original Mitsubishi Refill: This is the genuine Mitsubishi Uni-Ball gel ink refill for all Uni-Ball One gel ink pens, including the One P, One F, and One. Universal Fit: Compatible with all colours of the Uni-Ball One P pen. 0.5mm tip size for precise and smooth writing. Black Gel ink