The new generation of thin-walled, flexible heat shrinkable tubes made of cross-linked polyolefin with a 3:1 shrink ratio and packed in convenient containers for storage. The main advantage is the ability to shrink onto elements with a large difference in diameters. In addition, five tubes of this type cover a range of diameters from 1.0 mm to 20.0 mm, which would require 10 sizes when using tubes with a 2:1 shrink ratio. This allows for significant reduction in storage costs. • Basic electrical insulation• Color coding• Protection against corrosion and mechanical damage