These Ultra HEPA style cloth bags are designed to fit SEBO X series, G series, C series and 370 series upright vacuum cleaners. The "Ultra" bags make sure the dust you collect stays trapped for cleaner home air quality. SEBO dust bags are of generous size so consumers can go longer between changes. Each bag is armed with a plastic locking system to funnel dust in the opening and also a plastic cap for a cleaner disposal process. Genuine part # 5093AM **SEBO recently changed the 5093 part number from 10 paper bags to 8 Ultra bags.