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. Specialized — Designed specifically for rigorous cable and wire marking applications. Durable — Self-extinguishing and resistant to extreme temperatures, UV light, chemicals, fuel and oil. Efficient — Fast shrinking to save installation time and cost. Easily Identifiable — Made with a crisp, clear identification surface that’s resistant to abrasions and fading.