Brother P-touch Pro Tapes are built with tough and durable professional grade materials and adhesives. Developed to meet the needs of tradespeople and other professionals looking for reliable long-term identification that withstands the test of time. This 17.7mm black on yellow HSe-641E tape cassette has been designed specifically for the marking and identifying of cables, fibre and wires with an outside diameter of 5.4mm to 10.6mm. When the printed tube is placed over a cable and heated with a heat gun, the tube shrinks down, gripping the cable tightly. No adhesive is needed, ensuring that even in warm environments the heat shrink tube will not unpeel from the cable. Pro Tape TZe tape cassettes are quick and easy to install and come in various label widths, colours and materials. So, no matter what the job, Pro Tapes can provide you with crisp, sharp and easily readable labels to get the job done.