General description 7 Pcs H13 Dust Sponge Filter for SC21F50 Vacuum Cleaner is made from new, high-quality materials, ensuring a perfect fit for your old equipment. Keeping your cleaning accessories in top condition helps your home robot perform at its best. Technical specifications Material: Plastic Package Contents: 7 x filter cotton Measurement allowed error: +/- 1-3 cm Usage To maintain optimal cleaning performance, it is recommended to replace the cleaning accessories every 2-3 months, depending on usage frequency. Other information Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product.