[Safety and environmental protection] XHF dual wall shrink tube are UL and CSA certified, RoHS compliant, free of formaldehyde (HCHO), heavy metals and other harmful substances. Don't worry about it hurting your body and environment.Applicable to 1/0, 2/0, 3/0, 4/0 AWG cable electrical projects. | [A wide range of applications] Shrink tube are mainly used for industrial, ship, wire links, anti-rust and anti-corrosion protection of solder joints, and audio and electrical DIY. Wire ends, harnesses, electronics protection and insulation treatment, fitness equipment parts and steel structure surface protection and so on. | [The rubber liner has good sealing performance] XHF heat-shrinkable tube has the advantages of good electrical insulation, good sealing, corrosion resistance and high temperature resistance. Anti-aging, tough, not easy to break. | [Note] The size of the advertisement description is the size before shrinking, and it is the diameter of the heat shrinkable tube in a circular state. | [Multiple Size Colors] We have three different colors: black, red and clear. There are 13 sizes: 12.7mm (13mm), 15mm, 19.1mm (19mm), 25.4mm, (25mm), 30mm, 39mm (40mm), 50mm.