This TECHSPAN HSPO thin wall heat shrinkable tubing is a general-purpose 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 industrial and military applications. Features include a 2:1 shrink ratio, flame retardancy (except clear), low smoke generation, and a 600V rating.The TECHSPAN HSPO-250-2-IIL is a single-wall heat shrink tubing with a 2:1 shrink ratio. It has an expanded inner diameter of 0.25 inches (6.35 mm) and a recovered inner diameter of approximately 0.125 inches (3.17 mm). The tubing is 4 feet long and has a wall thickness of 0.025 inches (0.64 mm). It operates continuously between -45°C and 125°C and is rated for 600V. It meets UL 224 (File 203950 for colors) and CSA (File 220127) requirements.