is a collection of 200 pieces of heat shrink tubing in various sizes and colors. They are made of high quality polyolefin material and have a shrink ratio of 2:1, which means they shrink to half of their original diameter. They are ideal for insulating, protecting, identifying and repairing cables, wires, connectors and more. The kit includes tubes with internal diameters of 6.0 mm, 8.0 mm and 10.0 mm, which can be used for a variety of needs and applications. They can be used in a range of temperatures operation from -55°C to +125°C. The minimum temperature at which they start to shrink is +70°C and the maximum temperature at which they completely shrink is +110°C. They have a tensile strength of 10.4 MPa and are non-flammable. They are also UL (Underwriters Laboratories) approved, which confirms their compliance with strict safety standards.