An 80mm Thermal Roll – 60 GSM is a standard receipt paper used in POS (Point of Sale) systems, cash registers, and card machines.80mm: Indicates the width of the paper. It is the most common full-sized receipt paper.60 GSM: Indicates the paper weight (Grams per Square Meter). A 60 GSM paper is slightly thicker and stiffer than standard budget thermal papers (which often range from 48 to 55 GSM), resulting in a premium feel and better durability