The Thermal Receipt Paper Rolls in this lot of 30 are 8.5″ wide with a 2-3/8″ diameter and a 1/2″ core size. Made of thermal paper, these rolls are ideal for use in point-of-sale printers and other retail applications. With a sturdy 1/2″ core for easy installation and handling, these high-quality paper rolls provide clear and reliable receipts for your business transactions.