Specifications: (width x length) - 38 mm x 90 mm, 1.4 in x 3.5 in - black on white, 10 rolls with 2 reusable label holders, 4000 labels (400 labels/roll) - compatible with Brother DK-11208 pre-cut standard address labels. [ Compatible ]: Brother QL-500, QL-550, QL-570, QL-580N, QL-650TD, QL-700, QL-710W, QL-720NWQL-800, QL-810N, QL-820NWBQL-1050, QL-1060N, QL-1100 0, QL-10 110NWB [ Reusable Label Holder ]: 2 pre-installed cartridges in this package. You can disassemble the holder and mount it on other wheels. * These holders can only be used on castors of the same model* [ Multipurpose Labels]: These labels are perfect for use in the home office environment. Mainly as large address labels, but also good for other purposes, it is up to you to decide. Premium adhesive: still reliable at extreme temperatures from -10°C to 70°C. The patented premium adhesive ensures long-lasting strong adhesion. No more shipping lost caused by peeling off labels. [Thermal Paper Labels]: Prints crystal clear images and easy to read barcodes. Waterproof (do not soak), scratch-resistant, oil-proof. * Thermal labels should be avoided for use in high temperature or direct sunlight environments. * [ Tape prohibited ]: These thermal labels are fade resistant. Do not apply tape to the label as chemical reactions can cause the contents on the label to fade. [Health issues]: BETCKEY Direct thermal paper has passed ROHS certification. It has been tested that the paper does not contain carcinogens such as BPA, BPS. [ Technical Support ]: BETCKEY provides lifetime free customer support via Amazon Message email call and remote desktop operation. Contact us immediately if you need help.