Retro 51 Retractable Rollerball Refill in Purple for Tornado Pens

Retractable capless rollerball ink cartridge refill for Retro 1951 twist-top rollerball pens.Retro 51 – Rollerball Refill – Retractable – Purple – 1 Refill Features: Fits most Retro 51 Rollerball Pens Sold individually in purple ink Refill length: 3.83 inches / 97.49mm Writes with a fluid, liquid line.