The 342-20090 Heat Shrink Tubing and Sleeves With Heat Shrinkable Tubing 2:1 VG-Norm 76,0/38,0 manufactured by HellermannTyton is an electronic component used to provide insulation and strain relief. It features a 2:1 shrink ratio, allowing it to fit tightly around insulation and splices, creating a secure seal. The material is also flame retardant and resistant to chemicals, abrasions, and other environmental factors. It is certified for use in Europe and other regions, making it useful for electronics projects all around the world. This part is perfect for protecting and organizing wire harnesses, cable bundles, and other delicate components.