①. Feature: - Stretchable and freely retractable - The hose is retractable, so you can easily extend the length of the downspout to fit where you want. - Durable and strong - The flexible hose is made of polypropylene to be flexible, durable and portable, which is an alternative to prevent air conditioner leakage when the main water drain hose breaks. Align the ends, twist clockwise until it locks, easy to install. - Universal compatibility - The exhaust pipe is suitable for all types of portable air - conditioning models. As long as the same flexible hose is used, the diameter of the connector is 13/15 cm (the outer edge on the outer edge), and its thread is counter - clockwise on the edge. Please check the diameter before ordering. ②. Specification: - Material: Polypropylene - Size: - 13cm diameter: 13cm x 1.5M/13cm x 2M/13cm x 3M - 15cm diameter: 15cm x 1.5M/15cm x 2M/15cm x 3M - Color: As the picture shows