- Standard refill for the following EnerGel pens: BL407, BL107, BL77, BL57, BL37
- High performance ink technology combines the best qualities of liquid and gel ink for a super-smooth writing experience
- Writes vivid, medium lines with a 0.7mm metal tip
- No smears, no smudges and no globs
- Quick-drying ink is ideal for lefties
