SchmidtShort CaplessGreen Rollerball Refills are a liquid ink available in Fine only. Capless quality suitable for retractable roller pens – one year cap-off time. Metal tube with stainless-steel tip and ceramic ball. Length3.88 inch, diameter 7mm. Color:Green Refill Number: P8126 Note: Check the length of the refill you need – Schmidt Capless refills are available in a long and short version and do not fit the same pens and are not interchangeable.