Features: Polypropylene material has good heat resistance, dielectric property and high frequency insulation. Widely used in insulating wires and providing environmental protection to protect the wire connections, solder joint, wire ends, wires and the electronic devices from corrosion and moisture. Creating cable entry seals to offer environmental sealing protection. Suitable for electrical insulation, wire bundling, color coding, mechanical protection, wire / cable joints, daily repairs, etc. 5 colors and 12 specifications can satisfy your different needs. Specifications: Material: Polypropylene Minimum Shrinkage Temp: +70 Full Shrinkage Temp: +110 maximum Operating Temperature: -55-125 Tensile Strength: 10.4Mpa Dielectric Strength: 15 KV / mm Flammability: Flame Retardant Cutting Method: Scissors or Sharp Knife Shrinkage Ratio: 2:1 (Shrinking to 1/2 its Supplied Diameter) Qty: 560Pcs / Box Black: 1.0mm (90pcs), 3.0mm (50pcs), 10.0mm (25pcs), 13.0mm (20pcs) Red: 1.5mm (70pcs), 4.0mm (45pcs), 7.0mm (25pcs) Yellow: 2.0mm (80pcs) Green: 2.5mm(70pcs) Blue: 3.5mm (45pcs), 5.0mm (20pcs), 6.0mm (20pcs) Length: 45mm / 1.8inch Weight: 213g Type: Heat Shrinkable Tube Package Include: 1 x Box of 560Pcs Heat Shrinkable Tubes