Work for label printer ITPP941 Thermal Direct Shipping&Stack Label Width size: 4'' (108MM) Length size: 6''(158MM) Standard size for platforms: Amazon, eBay, Shopify, FedEx, ShipStation, PayPal, Shipp more→o, etc. Direct thermal labels provide excellent print ability. No ribbons required. UPS and USPS quality approved. Compatible with 4XL Printer-ITPP941. It offers the label on 1000 boxes, plastic poly bags, mailing tubes, warehouse supplies and bubble wrap for your storage, packaging, or shipping supplies, each label costs less than 0.045! Warm tip : Labels belong to consumables, we highly suggest to purchase at least 2 packs for using long-time and reducing the extra shipping cost.