Specification: Brand new Material: PC color: picture color Shrinkage Ratio: 2:1 (will maximum shrink to 1/2 supplied diameter) of heat shrink tubing,7 Specifications,2 colors. Supplied internal diameter: 2.0mm,2.5mm,3.5mm,5.0mm,7.0mm,10.0mm,13.0mm Minimum Shrinkage Temp: 84 Celsius Full Shrinkage Temp: 120 Celsius Operating Temperature: -55 Celsius to +125 Celsius Tensile strength: 10.4 Mpa Dielectric strength: 15 KV/mm : Retardant Supplied (round or flat): Product is supplied flat Cutting : Scissors or sharp blade Package Contents: 30pcs * 2.0 x 40mm (Black,Red each 15pcs) 20pcs * 3.5 x 40mm (Black,Red each 10pcs) 20pcs * 5.0 x 40mm (Black,Red each 10pcs) 16pcs * 7.0 x 80mm (Black,Red each 8pcs) 8pcs * 10.0 x 80mm (Black,Red each 4pcs) 8pcs * 13.0 x 85mm (Black,Red each 4pcs) 12pcs * 2.5 x 40mm (Black) 13pcs * 2.5 x 40mm (Red) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.