Thermal roll 52g 57x40mm, for card receipts, Safe Contact. Roll dimensions: width 57mm, diameter 40mm, length 18m (+ or - 2m), standard core 12mm. Patented innovation: the printing occurs through a physical reaction rather than a chemical reaction as with standard thermal papers. The Safe Contact thermal rolls are free from chemical developers, BPA-free, and phenol-free, making them safe for health and even approved for direct contact with food. The thermal rolls are made from a slightly bluish paper that is resistant to sunlight and moisture, ensuring long-lasting print: the text on the receipts remains legible for at least 35 years. Environmentally friendly paper, FSC-certified and recyclable along with paper waste. Made in France. For maximum protection and comfortable storage, the rolls are packaged in cardboard boxes. Box contains 20 rolls.