Keep writing with the uni-ball Jetstream Rollerball Pen Refill, which is blue pen refill suitable for use with uni Jetstream Retractable pens. It features a 1.0mm medium nib and is quick and easy to replace when your pen runs out of ink.
•SXR-10 rollerball pen refill in blue
•1.0mm medium tip
•Compatible with uni Jetstream Retractable pens
•Quick and easy to replace