Uni SXR-7 Refill for Uniball Jetstream Retractable Pen 0.7mm

Refill for Uni Jetstream retractable pen - Prime Roller(SXN 2200G 07) , SXN 157, SXN 217.
0.7mm ball writes approx. 0.35mm line.
110mm long, 4.4mm diameter.