4" x 2" DuraPoly Synthetic Thermal Printable Labels. Special High Tack Adhesive, No Perforation, Wound Out on 3" Cores. Suitable for Industrial Zebra Printers. 3 Grades of Print Ribbons available, depending on your application needs. Ideal for Pipe, sheet metal and painted metal labeling applications.2,800 Labels Per Roll. 4 Rolls Per Case.