Description Uniball SXR80 Refill 0.7mm QTY: 1 dozen refills (single colour or mix) * Refill for the Jetstream 3 Multicolour 0.7mm Retractable Multi-pen. * Vibrant, smooth-flowing ballpoint ink and a special spring mechanism that prevents ink leakage, plus a twin ball in the back of the tip to prevent backflow Colour: Black / Blue / Red