These permanent adhesive labels are the perfect single use tape for your mailroom needs. They measure 5-1/4" x 1-9/16" wide with an imprint area that's 4-3/8" x 1-9/16" wide. The crack and peel tab makes for easy label removal off the liner, and the bright white label stock is designed to work specifically with your inkjet based mailing machine to create a crisp, clean image. And being a single use tape, you don't have to worry about stacking up the unused half tapes and trying to run them through you machine again! This is the perfect tape for efficiencies in employee time, and waste of label material.