The outer layer of the foam tubing is made of XPE material, effectively insulating against heat, sunlight, moisture, and aging. The inner layer is made of E-P-E material, which is waterproof and with high insulation performance, it can reduce heat loss, power consumption, and noise of AC units. The insulation foam tube is widely used in mini split air conditioners, heat pump equipment, solar energy system, and hot and cold water supply pipes, it also can be used to protect the grip of a variety of equipment, such as fitness equipment, guitar, utensils, and so on.SpecificationInner Diameter: 10mm(0.39"), 12mm(0.47"), suitable for 1/4" and 3/8" OD copper pipes.(The OD of copper pipes to be insulated should be around 2mm smaller than the inner diameter of the foam tube.)Tube Thickness: 8mm / 0.31"Tube Length: 9.84FtPackage Included: Pipe Insulation Foam Tube x 1AdvantageExternal pipeline thermal insulation reduces heat loss, maintains stable water temperature, and prevents accidental contact with the pipeline burning.Not easy to get moldy, can be used safely in humid environments.Dual-pipe integrated design, will not be scattered when bundling, easy to install on AC copper line set.InstructionCut the foam pipe to the required length and fit it to the pipe or handle, or joint multiple sections together if required.Regularly check the condition of the foam pipe to ensure it is in good condition and performing at its best.NoteMake sure the size is right for your pipe or your needs before ordering.