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