The tape within this genuine Brother TZE-M921 cartridge is Black On Silver in colour, making it easily readable in most circumstances. All 8m of the original Brother TZE-M921 tape measures 9mm in width, making it a perfect fit for the majority of items around our house or workplace.This Brother TZE-M921 tape cassette is an ideal organisational tool, and we are sure that you will be pleased with the look and durability of the labels it produces. The adhesive used on the tape within the Brother TZE-M921 is incredibly strong, helping labels stick to most common surfaces with ease.