Uni has released the popular SXR-80 refill in environmentally-friendly, paper packaging! Mitsubishi Jetstream Multi Refill in your choice of .38, .5, .7, or 1.0 tip size and Black, Blue, Red, and Green ink colors. (Green ink not available in1.0 mm.) This refill is good for the Jetstream 4 1, and will fit in the Jetstream Edge .28 or the Jetstream Edge .38, but not the single Jetstream version.