Molshine Compatible Label Tape Replacement for Brother TZe-S421 Black on Red (0.35inch 3/8inch 9mm) 2 Pack 100% Compatible for Brother TZe-S421 2 Pack TZe-S421, Black on Red; Width-3/8 inch (9mm), Length-26.2 feet (8m) Labels NEVER smudge or smear, high durability. Split back makes tape easy to peel and apply. For indoor and outdoor use, resists water, chemicals, abrasion, fading and so on.