Features: Our the dual-sweeping side brushes are made with high-strength bristle to collect more dust in a unit area. The sturdy plastic over the filter give it more durability over-time. Our replacement-parts have been tested on compatible-machines to ensure the appropriate functioning and machine protection. Widely Application: The cleaning head works great on many types of floors, such as marble, smooth tile, laminate, especially for short-pile carpet. The Agitator Roller deeply removes dirt from your floors, and ensures the removal of dust and crumbs from hard and hardwood floors in your home. Specifications: Material:Plastic Size:Approx.19.4cm/7.63" Model: for NARWAL-J3 Package Includes: Three Package Optional: Package 1: 4Piece/pack Main Side Brushs Package 2: 4Piece/pack Roller Brush Accessory Package 3: 4Piece/pack Roller Brush Accessory note: Please allow 1-2cm errors due to manual measurement,Please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.