Specification:Brand newMaterial: PCcolor: picture colorShrinkage Ratio: 2:1 (will maximum shrink to 1 or 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,13.0mmMinimum Shrinkage Temp: 84 CelsiusFull Shrinkage Temp: 120 CelsiusOperating Temperature: -55 Celsius to and125 CelsiusTensile strength: 10.4 MpaDielectric strength: 15 KV or mm: RetardantSupplied (round or flat): Product is supplied flatCutting : Scissors or sharp bladePackage Contents:30pcs x 2.0 x 40mm (Black,Red each 15pcs)20pcs x 3.5 x 40mm (Black,Red each 10pcs)20pcs x 5.0 x 40mm (Black,Red each 10pcs)16pcs x 7.0 x 80mm (Black,Red each 8pcs)8pcs x 10.0 x 80mm (Black,Red each 4pcs)8pcs x 13.0 x 85mm (Black,Red each 4pcs)12pcs x 2.5 x 40mm (Black)13pcs x 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.