This cartridge-type roller ball liquid ink pen refills with with international short Kaweco ink cartridges
, just like a fountain pen! It's a convenient ink system that gives you the smooth flow and color range of fountain pens in a roller ball pen form. The Kaweco Sport Ice Rollerball pen is available in four translucent colors and is made from strong yet lightweight ABS/Terlux plastic.
One Blue ink international short cartridge is included inside the pen upon receipt. Additional ink colors are available under the "Recommended Refills/Parts" link above.