Mitsubishi gel refill 0.5 UMR05S.33 Mitsubishi pencil 4902778261385 (10 sets)

Ball diameter: 0.5mm φ6 x total length 112mm 2.5g The notebook fits perfectly. A refill for Uni-Ball One that has deep black and vivid colors. Gel ink ballpoint pen. UMR-05S. ◆Ink color: Blue ◆One ink ◆Body: UMN-S-05