Hongshang Heat Shrink Heatshrink + adhesive 615597 - Hongshang H-5(3X)-F 3/1, The Hongshang H-5(3X)-F 3/1 heatshrink with adhesive is a 3 mm black tubing that shrinks to 1 mm with a 3:1 shrinkage ratio over its 1.22 m length. It provides insulation and protection for cables and wires, commonly used in electrical and automotive applications. This product's adhesive lining ensures a secure, weatherproof seal. Hongshang H-5(3X)-F 3/1 Heatshrink Adhesive Black 3mm Shrink 3:1 1.22m