Heat Shrink Tubing Length: 15m Diameter before shrinkage: 9.5 mm Ratio: 3:1 Dual wall heat shrink tubing has excellent electrical insulation and excellent sealing properties, and is suitable for electrical wire connections, protection and insulation of cable ends, wire harnesses, electronic components, and electrical DIY. The heat shrink ratio of the heat shrink tubing is 3:1, shrinking to 1/3 of its original size. When the adhesive-lined tube is heated, the inner layer adhesive melts at the same time as the tube shrinks, and after the tube and adhesive cool, the adhesive flows to fill the small space between the heat shrink and the object, creating an IP68 waterproof seal. Images 1-6 are reference images. Please refer to the actual photos from image 7 onwards. Thank you for viewing! Instant purchase OK!! We try to ship as soon as possible(^^) We also have various other items for sale, so Please take a look✨ #na goods 35.5