PREMIUM QUALITY MATERIAL - The products are made of high-strength and environmentally friendly materials to optimal performance and a healthier lifestyle. EASY TO CLEAN AND REPLACE - Regularly clean and replace roller brush to improve suction and performance and extends the life of your robot vacuum. - Compatible with DC40 Vacuum Cleaner. Hepa Filter -HEPA filter is made of high-strength environmental-friendly materials, which can block most of dust down to 0.3 micrometer. The filter can maintain the cleaning performance of the sweeper, while reducing the penetration of dust, pollen and other into the air you breathe Replacement Filter: A dirty filter will greatly reduce suction power. Depending on the vacuuming frequency and amount of dirt cleaned, for best performance, change the filter at least every 3 to 6 months. Name:Roller Brush Type:Vacuum Cleaner Accessories Vacuum Part Type: Filters Type: Vacuum Cleaner Parts Application: Wooden Floor, Ceramic Tile, Marble, Etc Applicable Occasions: Living Room, Bedroom, Kitchen, Etc color:Blue Material:plastic Package Contents: 1 x Roller Brush 1 x Pre-Filters 1 x Post-Filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.