The Brother HSe221E Labelling Tape features a 9.0mm black on white heat shrink tube cartridge with a 3:1 shrink ratio, perfectly compatible with PT-E300VP, E550WVP, D800W, P750W, P900W, and P950NW label printers. Ideal for insulating and protecting wires, this tape ensures clear, durable labeling that withstands harsh conditions, making it essential for precise and professional cable management. Enhance your organization with reliable, easy-to-apply heat shrink tubing that delivers long-lasting results.