The Brother RDP01U1 Premium Die-Cut Labels are designed for business and IT environments requiring specific label dimensions and reliable printing. Each label measures 3 inches by 4 inches and features a sensor mark for accurate feeding and printing. These labels are supplied on rolls with a 2.5-inch outer diameter and a 1-inch inner diameter, utilizing a gap between labels. The die-cut format ensures consistent label size and simplifies application. This offering comes as a case of 12 rolls, with 165 labels per roll, providing a substantial supply for ongoing operational needs.