Label size: 4" x 6", 220 labels per stack, total 16 rolls = 3,520 labels. Perforated for Easy Tear-off. These blank mailing labels are great for Barcodes, UPS, USPS, FedEx, DHL, Amazon, eBay, PayPal Shipping and other vendors. Works with 4" wide thermal printers, like the models: Zebra ZP450, LP2844, LP2844Z, GK420d, GK430t, GX420d, GX430t, GoDex EZ-DT4 and others.