Kit suitable for cleaning wood pellet stoves with stainless steel and enameled pipes, crossed elbows with a maximum curvature of 90 (or double curvature of 45).Nylon brushes. Robust, durable and particularly abrasive, they scrub and clean without scratching or damaging. Flex brushes have a flexible shaft which makes them very flexible. Unlike springs, they have the ability to bend perfectly to negotiate the most delicate turns and return to their initial position without being damaged or deformed, which gives them perfect flexibility even after prolonged use.Flexible stainless steel cable extension 9 meters long, durable and yet very flexible, does not lose its strength even in a long and curved chimney.