1. Upgraded PP Material: Our exhaust pipes are made of more environmentally friendly PP material, suitable for steel wires. Compared with other PVC exhaust pipes, our exhaust pipes are more stable and less prone to deformation. 2. Easy Installation: The threads of the air - conditioning pipe are counter - clockwise. Gently pull the exhaust pipe and tap the existing pipe until it rotates clockwise and turn it to the correct position. It is applicable to air conditioners, range hoods, and compressed air dryers. High - quality materials ensure that the product can be used multiple times and last for many years. 3. Multiple Sizes: The diameters of the air - conditioning hoses are 150mm and 130mm. The portable air - conditioning hoses are suitable for most portable air conditioners on the market; the length is 2m and the flexibility is 1.5mm. It can be flexibly adjusted. 4. Durable and Sturdy: The hoses are flexible, durable, and portable. They are a good alternative to prevent air - conditioning leakage when the underground drainpipe is broken.