Schmidt 8126 Long Capless Rollerball Refill - Black, Blue, Green, Red Ink (Fine Tip 0.6mm) - Pack of 20

Schmidt 8126 Long Capless Rollerball Refill - Black, Blue, Green, Red Ink (Fine Tip 0.6mm) - Pack of 20You may also like Schmidt 5888 Safety Ceramic Rollerball Metal Refill - Black, Blue, Green Red Ink (Fine Tip 0.6mm) - Pack of 30.