Fits the DM16II model, as well as the Bottle-Matic 16. The Bottle-Matic uses 2 rollers per machine. Sold in singles.
If your labels are not feeding properly and slipping, first check the tension spring on the roll of labels. Make sure it is not compressed more than 15-20%. If the label are still slipping, check the rear rubber roller for wear. New rollers have a tactile surface, and over time, they wear smooth where the liner feeds through, and can even become shiny. If worn down, replace the drive roller.