Pilot BVRF-8EF-L Refill – 0.5mm – Blue

Pilot BVRF-8EF-L Refill – 0.5mm – Blue This refill contains Pilot’s special low-viscosity Acro Ink, which has a fifth of the viscosity as their regular oil-based ink pens. BVRF-8EF-L Refill for Pilot Dr. Grip 4+1 Multi Pen – 0.5mm Blue Ink