Pilot FriXion Ball 0.5mm Multi Pen Refill Set 3 Colors Black/Blue/Red Original
Compatibility: Pilot FriXion Ball 4 Multi Pen (model may vary – verify your pen). ✓ Planner Enthusiasts: Color-code schedules with erasable ink. 1x Black refill. 1x Blue refill. 1x Red refill. Upgrade Your Multi Pen with Premium Erasable Ink.