JUKR introduces Industrial Grade, High Insulation, Easy to Handle Heat Shrink Tube Made With Virgin Quality Polyolefin Material. Its 4 mm Diameter, Assorted 2:1 ratio, Black Coloured Heat Shrinkable Sleeve Wrap 25 Meter Long. JUKR Multipurpose Heat Shrink Sleeve Suitable for Wide Range of Applications and DIY Projects, School and College Student Projects, Electronic and Electrical Service Centers, Cable and Wire Harnessing Applications, Automotive Electrical Wirings, Damaged Mobile Phone Charger Cables, PCB Wiring Insulation, Damaged Head Phone Cables, Electrical Wire Joint Insulation, HDMI / C-Type Cables and Joints 'n' Repairs Electrical Cables. JUKR Shrinkable Polyolefin Tube Also to be Used to Insulate Wires, Providing Abrasion Resistance and Environmental Protection for Stranded and Solid Wire Conductors, Connections, Joints and Terminals in Electrical Work.