The Zebra 5319 Performance Resin Ribbon case contains 12 rolls of 4.30 inch width [109 mm], 243 feet [74 meters] resin ribbon, each with a 0.5 inch inner diameter core. The Zebra 5319 Performance Resin is a performance wax ribbon formulation for high-quality printing on both Zebra coated and uncoated paper facestocks. The Zebra 5319 is the recommended formulation for good print quality on tough-to-print uncoated and uneven tagstocks including Tyvek. This ribbon provides minimal resistance to scratches, smearing, and chemicals. UL/cUL & CSA recognized with select Zebra materials.