FeaturesHeat shrinkable, with 3:1 shrink ratio, self-extinguishing, made of B-342 polyolefin materialChemical, corrosion, fade, humidity, smear, smudge, UV, weather-resistant, full circle insulating sleevesThermal transfer printing technologyExcellent cold weather performanceHeat shrinkable, self-extinguishing sleeves are the ultimate in marker durability, permanence and aesthetic appearanceFast shrink rate saves time and costs during installation0.187 in dia as suppliedMatte finish1 roll/cartridgeBrady® PermaSleeve® heat shrinkable sleeves fit snugly around wires for maximum insulation protection and permanent identification