Correction rollers are pretty handy things - so much easier to use than the old bottles of white gunk we used to use. But a lot of us don't use one often enough to want to carry a full-sized one around. So PLUS made these handy Mini rollers. They work just the same way, and they're the same classic 'mouse' shape. They're just a bit smaller, so they're a bit easier to slip away in your pencil case, bag, or even a corner of your drawer.
4.2mm wide tape, with 6m of tape inside each one. PLUS recommends using a fineliner for writing over the correction tape.