3M Tubing & Molded Parts are heavy-duty heat shrink tubing made of polyolefin material. They have an overall length of 20 ft (6.1 m) and a maximum operating temperature of 110 ℃ (230 ℉). These orange and red tubings have a shrink ratio of 1.5 : 1 and an inner diameter before shrink ranging from 10.858 in to 275.8 mm. They are suitable for use in construction bus applications and can withstand temperatures ranging from -55 °C to 110 °C (-67 °F to 230 °F). The product comes in various rectangular, round, and square sizes. With a voltage range of 5 kV, 8 kV, 15 kV, and 25 kV, it offers great versatility. UL approval, halogen-free feature, and inner glue are not included. - 7100025924