The Helios KWL-RS cleaning set is specifically developed for thorough cleaning of FlexPipe (DN 63 and DN 75) and RenoPipe (DN 100) air duct systems. Suitable for both short and long pipe runs, the system can be operated by pushing or pulling the cleaning brush. For extended or tight installations, the nylon round brush can be pulled toward the distribution box using the included flexible GRP wire. Dust and debris loosened during the process can be efficiently removed using a standard vacuum cleaner. Supplied in a convenient carrying bag, the set includes a 20-meter hand reel with flexible GRP wire, nylon brushes for DN 63, DN 75, and DN 100 pipes, a 90° bend with sealing ring for suction (DN 56), and adapter fittings DN 56/40 and DN 56/32 for versatile use.