This is a TOSHIBA TEC label for their DT printers. It's a non-perforated, white label measuring 2 inches by 1 inch, designed for high-volume printing with 11,000 labels per roll.
Each case contains 4 rolls, and these labels feature a 3-inch inner diameter and 8-inch outer diameter core, with a top-coated surface for optimal print quality and wound out for easy dispensing.