Features: The set includes 200 pcs black heat shrinking tube of different sizes. The heat shrinking tube has a maximum shrinking ratio of 2:1 at the temperature of +110℃. These heat shrinking tube has a large tensile strength,very durable. The dielectric strength of the tube is 15KV/mm that makes it is more safe to use. The heat shrinking tube can work normally between -55~125℃. Specification: Size:1mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 5mm Shrinkage Ratio:2:1 ( Will Maximum Shrink To 1 / 2 of Its Supplied Diameter ) Minimum Shrinkage Temp: +70℃ Full Shrinkage Temp: +110℃ Operating Temperature: -55℃ To + 125℃ Tensile Strength: 10.4 Mpa Dielectric Strength: 15 Kv / Mm Flammability: Flame Retardant Supplied Format ( Round or Flat ): Product is Supplied Flat Cutting Method: Scissors or Sharped Knife Package List: 200 x Heat Shrinking Tube Note: 1. As different computers display colors differently, the color of the actual item may vary slightly from the above images. 2. Please allow 1-3mm differs due to manual measurement. .