Specifications: 1-1/8” x 3-1/2” - 30252 Dymo Compatible Address Labels - 6 Rolls/Case & 350 Labels/Roll. Printer Compatibility - Aomya compatible Dymo Printers LabelWriter: 300, 310, 315, 320, 330, 400, 400 Duo, 400 Twin Turbo, 450, 450 Duo, 450 Turbo, 450 Twin Turbo, 4XL, EL40, EL60, SE300, SE450 CoStar LabelWriters: XL, XL+, BC, BC+, TURBO, SE200, SE250, ACII 200 / ASCII 250 Seiko Label: ALL Perfect size For Home &Business: Smooth and tidy rolls make the printer fluently. Patented design enables easy and fast peeling, it is BPA free.Bright white & High Quality direct thermal paper with sharper text and print quality for all your labelling needs (shipping, address and barcode labels) Jam-Free, Headache-Free: Avoid time-consuming printer issues such as label jams and misfeeds. Aomya Adhesive labels follow extremely strict QC guidelines. Guarantee: We offer 1:1 replacement/refund for any defective caused by our factory, If you received the item with problems, please contact us within 15 days after you received it.