Zebras Z-Perform 1000D Direct Thermal labels are market leading labels for use in direct thermal printers. The most popular size in the UK as used by Royal Mail & all major couriers. These are a direct thermal uncoated paper label with a permanent acrylic adhesive on the back supplied in trade-only, wholesale, 12 roll, 5, 700 label Bulk Boxes. The Zebra labels measure 6 x 4 (152.4 x 101.60mm narrow edge leading), with 475 labels per roll, wound onto 1 (25.4mm) cores with an overall roll diameter of 117mm. Suitable for use on all Zebra 4 desktop printers, including GX & GK ranges, legacy LP & TLP 4 printer ranges, & many others. 475 labels per roll 25.4mm core 126.55mm maximum overall roll diameter For a planet-friendly alternative, check out our Priory Elements Eco Labels™.