This TECHSPAN Single Wall Heat Shrink tubing is a general-purpose, thin-wall solution made from cross-linked polyolefin, offering excellent electrical, chemical, and physical properties. It's tough, flexible, and ideal for insulation, harnessing, strain relief, and identification in various industrial and military applications. Featuring a 2:1 shrink ratio, it meets UL and CSA requirements, is flame retardant (except clear), generates low smoke, and is halogen-free. Available in convenient 4-foot lengths, it operates reliably within a wide temperature range.TECHSPAN HSPO-375-4-IIL is a single-wall heat shrink tubing with a 2:1 shrink ratio. It has an expanded internal diameter of 3/8 inch (0.375 inches) and recovers to approximately 0.188 inches. The tubing is rated for 600V and operates continuously between -45°C and 125°C. It meets UL 224 (for colors) and CSA C22.2, 198.1 standards. The wall thickness is 0.025 inches.