General description vhbw offers high-quality, cost-effective vacuum cleaner bags designed for your Kärcher NT 501 and NT 551 vacuum cleaners. These replacement bags are essential for maintaining optimal suction power, as a full bag can significantly reduce performance. Technical specifications Material: paper Length: 12 cm Width: 6 cm Colour: brown 2-ply construction Compatibility and accessories Compatible with Kärcher NT 501 and NT 551 vacuum cleaners Replacement for part number 6.906-104.0 Usage These high-quality replacement bags provide a quick and easy solution for maintaining your vacuum cleaner's performance. Regularly replacing the bag will help prolong the life of your vacuum cleaner. Other information Content of delivery: 20x vacuum cleaner bags