Specifications: 2.3125" X 4" non-OEM replacement for DYMO 30256. 10 rolls, 300 per roll, 3,000 total. Matte white with permanent adhesive and perforations between each sticker. Prints without ink, toner, or ribbons. Shipping and Postage: Designed as shipping labels and return labels for ecommerce dispatch stations. Ideal for cartons, poly mailers, padded envelopes, and full postage layouts where larger format improves barcode placement and routing visibility. Scan-Ready Prints: Direct thermal output delivers dark, readable barcodes and text for consistent scan performance. Clean die-cut separation supports smooth feeding on LabelWriter 450 series during batch runs and high-volume fulfillment. Reliable Adhesion: Permanent adhesive bonds securely to corrugated boxes, kraft mailers, poly bags, and packaging surfaces. Built to reduce corner lift and maintain hold through sorting, transport, and delivery handling. Compatibility: Works with DYMO LabelWriter 450, 450 Turbo, 450 Twin Turbo, 450 Duo, 4XL, Wireless, 400, and 330 desktop printers. Not compatible with 500 series models including 550 and 5XL that require RFID-enabled rolls.