Details:*100% brand new and high quality*Material: Polyolefin*Shrinkage ratio: 2:1 (minimize to 1 / 2 of the diameter provided)*Heat preservation pipe collection, 7 specifications, 2 colors*Internal diameter: 2.0mm 2.5mm 3.5mm 5.0mm 7.0mm 10.0mm 13.0mm*Internal fully reduced diameter: 1.0mm 1.25mm 1.5mm 2.5mm 3.5mm 5mm 5mm 6.5mm*Minimum shrinkage temperature: 84 degree Celsius*Total shrinkage temperature 120 C*Operating temperature: - 55 degree Celsius to + 125 degree Celsius.*Tensile strength: 10.4 MPa*Insulation: 15 kV / mm*Specification manufacturing: ISO9001*Flammability: flame retardant*Approvals: UL approved*Supplied Format (round or flat): product is supplied flat*Color: Red, Black*127Pcs/Set (Inner Diameter x Single Length)12 x 2.5mm x 40mm Black10 x 3.5mm x 40mm Black10 x 5.0mm x 40mm Black8 x 7.0mm x 80mm Black4 x 10.0mm x 80mm Black4 x 13.0mm x 85mm Black15 x 2.0mm x 40mm Red13 x 2.5mm x 40mm Red10 x 3.5mm x 40mm Red10 x 5.0mmx40mm Red8 x 7.0mm x 80mm Red4 x 10.0mm x 80mm Red4 x 13.0mm x 85mm RedPackage Contents:127pcs Black Red Heat Shrink Tube (With Bag, Not Inluding Box )Note:The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.