Roll specifications:

Note on Label Orientation: If you are using an applicator to apply your labels, be sure to order label stock with the correct orientation for your applicator. For example, most applicators will apply the side of the label first, so you will want to print the labels sideways.
Digital Die Cut Media Notes: Even though the width of the media is 4.75 inches, the drive rollers on either side prevent printing in the areas indicated. The knurled rollers that bite into the media to drive it, damage the printable surface in this area. The actual printable area is 4.25 inches.

1Unprintable Area
2Printable Area
3Unprintable Area