The Dymo XTL Label Cartridge in black on white is a thermal print technology designed for flat surfaces. With a 3/8 inch tape width, this cartridge is perfect for labeling items in a clear and permanent manner. The model number 1868736 indicates a specific product within the XTL series, ensuring quality and compatibility with Dymo label makers. Ideal for business and industrial use, this label cartridge has an expiration date of 12-0155 for added convenience.