The Brother DK-1201 White Address Labels are specifically designed for use with QL label printers. With a size of 1.1 x 3.5 inches and 400 labels per roll, these labels are perfect for addressing envelopes, packages, or other items in a professional and organized manner. The white color ensures easy readability, while the Brother brand ensures high quality and reliability. The DK-1201 model is compatible with various Brother label printers, making it a convenient and efficient choice for any office or business setting.