The fleece filter bags are specifically designed for the Kärcher wet/dry vacuum cleaners WD 2 Plus, WD 3, WD 3 Battery, and KWD 1 to KWD 3, as well as the Kärcher carpet cleaners SE 4001 and SE 4002. They stand out due to their extremely tear-resistant material, optimal suction performance, and high dust retention. They are ideally suited for heavy-duty use, such as for vacuuming coarse and wet dirt. The package includes a total of 4 bags.