Permanently mark wires with the durable PermaSleeve PS heat-shrink polyolefin sleeve label material (B-342). Designed for use with a durable Brady handheld label printer.Designed specifically for rigorous cable and wire marking applications it is also Self-extinguishing and resistant to extreme temperatures, UV light, chemicals, fuel and oil. It has a Fast shrinking time to save installation time and cost and is made with a crisp, clear identification surface that's resistant to abrasions and fading.