*** PHENOL FREE *** Made from Appvion Alpha Free thermal paper. CORELESS thermal paper rolls have no plastic core to dispose of, better for the environment. Longer rolls means less changeouts and higher productivity. Suitable for all standard 3-1/8" or 80mm thermal receipt printers. Huge environmental benefits; no plastic core to buy, transport, store and put into the waste stream. The 330 ft roll has an OD of 3" or 76mm similar to 273 foot rolls on a core.