DYMO Label Tape Cartridge LetraTag S0721650 12mm x 4m black on blue: Durable, easy-to-print label tapes for everyday use at home. The easy-to-use DYMO® LetraTag® plastic label tapes are available in a variety of colors for a stronger visual impact and feature clear, sharp text. Thanks to thermal printing technology, no ink or toner is required. The cartridges can be quickly and conveniently swapped out while you work on a project. This label tape is washable, tear-resistant, durable, and easy to handle. DYMO® LetraTag® outer cartridges are made from 100% recycled materials, and the packaging is made from 60% mixed recycled and FSC-certified materials.