Built-in Steel Wire Spring: Flame retardant ducting built-in steel wire, so that the duct hose is not easily deformed, better support and stability, evenly distributed, can be used for a long time Ventilation Duct Hose: Made of thickened three proof cloth and built-in steel wire, it is heat-resistant, heat-resistant, waterproof, oil resistant, flame-retardant, and not easy to tear. Space-Saving Storage: Lightweight vent hose folds compactly when unused, saving space in garages, workshops, or closets. Flexibility, free connection, easy carry Easy Installation: The dryer vent hose can be cut to the required length according to the needs, and the attached clamps can help you connect the vent more closely. Please wear gloves to prevent injury during installation Lightweight and flexible, easy to bend., Manufacturer: KXCVBNKLJ