3" x 1" - Bright Pure White - Direct Thermal Labels (1375 Labels/Roll with 1" Core & 4" Diameter)PERFORATED LABELS - Multipurpose labels with rounded edges and perforations between each label. Exceptional quality that can easily be separated and written/printed on.PREMIUM STRENGTH ADHESIVE - Strong Adhesive that keeps the label down and sticks to most surfaces. Permanent hold that keeps the corners and edges stuck down. Smudge proof!DIRECT THERMAL SMUDGE PROOF LABEL - (Ribbons, Toner & Ink are NOT needed!) Compatible with most Thermal Transfer Printers including Zebra, Rollo, Fargo, Eltron, Sato, Intermec, Datamax, and more. See list below.JAM & BPA FREE - Excellent print quality. Perfect for UPC Barcodes, FBA labels, packaging, Addresses, envelopes, storage containers, school binders, shelving, and many more!