100% compatible.The bagdust is perfectly suited toàthe karcher machine.It is suitable forall models of 100% Karcher filter kits WD4, WD5, WD6MV4, MV5, MV6WD4.000...WD5.999, Karcher MV4, MV5 and MV6, Karcher Fumi WD4, WD5, WD5/P liquid vacuum cleaner and Nebramusstub.high quality.The vacuum filter bag is of high quality.and meets industry standards.Quality, compatibilityand sustainabilityhave beenrigorously tested.We are convinced that our products are better than the originals.Easy to useinstall and remove.We recommend replacing the bag with a new one every 1 to 2 days.3 months.Package Included.You will receive 8 easy-to-use packets.open.We cherish every customer and every order, even if it's just a few dollars, you are our God. Every month we will choose several different samples from several suppliers.If you have any suggestions, please don't hesitate to ask.contact us, which will help usimprove our services and improve our services.better serve youthe future.