Pilot BVRF-8EF-R Refill – 0.5mm – Red

Pilot BVRF-8EF-R Refill – 0.5mm – Red 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-R Refill for Pilot Dr. Grip 4+1 Multi Pen – 0.5mm Red Ink