【3:1 SHRINK RATIO】Experience rapid shrinkage with MEYOOZIISU tubing! When heated, it effortlessly contracts to 1/3 of its original diameter within seconds, forming a tight seal. 【GLUE INSIDE】Unlock enhanced performance with internal glue! When heated, the inner wall's adhesive melts and contracts, enveloping the connection point. This ensures not only tight connections but also long-lasting insulation and waterproofing effects. 【DUAL WALL TUBING】Experience the advantages of a dual-layered solution! The outer wall brings wear resistance, corrosion resistance, toughness, breakage resistance, and flame retardancy. Simultaneously, the inner wall delivers exceptional waterproofing and insulation effects. 【EASY TO USE】Simplify your projects effortlessly! Slide the sleeve onto the connection point and apply heat with a hot air gun to achieve the desired size. No specialized knowledge required—ideal for professionals and DIY enthusiasts alike. 【VERSATILE APPLICATIONS】Unlock limitless possibilities! Our 3:1 high-shrinkage tubing finds widespread use in power, electronics, communication, and automotive sectors. Perfect for insulation, sealing, and various cable-related applications. This heat shrink tube designed for the industrial and electrical industries with a high shrinkage ratio of 3:1, ensuring that cables and lines of all sizes can be tightly packed after heating. The double-wall design not only provides water resistance and insulation, but also includes a self-adhesive lining for additional protection. A blend of red and black to distinguish between different wires, this heat shrink tube is designed to cover industrial cables, ensuring safety and reliability in harsh environments. Whether you are in the industrial or electrical industry, our products meet your needs, providing superior performance and reliable protection.