Label Paper size: 4 inch x 6 inch (100mm x 152mm) , with perforated line. Material: direct thermal labels, upgrade blank mailing label, the label backing paper is thicker, the printing is more smoothly and can withstand scratches, water, dirt, dust, and grease. Universal Compatibility:Works seamlessly with most thermal printers. No ink or toner required - heat-activated printing saves costs. Ultra-Strong Adhesive: Thermal labels have ultra-strong adhesive with a high viscosity that ensures the thermal labels remain attached to any packaging surface during transportation. NOTE:If the label paper is not used up, it is recommended to put it in a sealed bag or box as soon as possible. Advantages: Print shipping labels and internet postage labels for transportation platform and e-commerce platform. Thermal labels eliminate the hassle of sheet waste and jams. UPC 798156389758 ASIN B0FCMGRFJW Size 1 Stacks | 500 Labels Color White 4x6 Style modern Brand Name Rongta Item Shape Rectangular Unit Count 1.0 Count Manufacturer Rongta Model Number RT-LZ-PL Material Type Paper Number of Items 1 Number of Labels 500 Manufacturer Part Number RT-LZ-PL