Hongshang 2181443108 heatshrink is a yellow-green tube with a 3.20 mm diameter and 1.60 mm upon shrinkage, featuring a 2:1 shrinkage ratio over a length of 15 m. This heatshrink is manufactured without adhesive, making it ideal for bundling and insulating cables where adhesive is unnecessary. It is commonly used in electrical and electronic applications to protect and reinforce wire connections.