SIZE: Each label measures 101mm x 50.4mm (4" x 2"), with 1,000 labels per roll on a 25mm (1”) core. COMPATIBILITY: These direct thermal labels are compatible with all Direct Thermal printers (Zebra, MUNBYN, Rollo, TSC, Toshiba, Citizen, Eltron, etc.), and suitable for handwriting. No ribbon or cartridge required. Not suitable for Laser, Thermal Transfer, or Dymo printers. PREMIUM ADHESIVE: Featuring permanent adhesive suitable for all seasons, these self-adhesive labels adhere well to surfaces like envelopes, paper, plastic, glass, metal, corrugated cardboard, shipping bags, bubble mailers, jars, bottles, and cans. EASY TEARING: The perforated line between labels allows for easy tearing, making the labels convenient and efficient to use. WATERPROOF & OILPROOF: These labels are top-coated, water-resistant, oil-resistant, and scratch-resistant, ensuring durability in various environments.