Pilot BLS-G2-5 Gel Ink 0.5 mm Refill

Pilot Gel ink refill which fits amongst others for: G-2, B2P Gel, G-Knock, G2 Retractable, G-2ex pens. This refill has a 0.5 mm tip and is in the colors black, blue and red. The black and the blue are only document proof in ISO 27668-2.