Heat Shrink Sleeve 1mm Black 5meter Industrial Grade WOER (HST) are excellent for insulation. They have exceptional insulation characteristics, excellent stress control properties; long-term weather and regular wear and tear resistance, ease of installation and reliable performance in even in harshest of the situations. These High performance 2:1 heat shrink material tubes, bundles, and protects cables; wire and hoses are used for a wide range of DIY applications. It is used extensively for cable and wire harnessing, strain relief, insulation, color-coding, identification, and protection.