You can use any of the Knifty Knitter long looms, or rectangle loom, to create ribbed knit. You can also create ribbed knit with a round loom, but the method is different.
The ribbing stitch can be made on any Knifty Knitter loom (round or long) simply by alternating the knit and purl stitches. It's simple enough for the beginner to loom knitting. If you want to make terrific patterns on the Knifty Knitter looms, you'll want to learn this stitch.