1. Function: filter particles 2. Applicable area: 51-100 square meters 3. This product is suitable for cleaning furniture and floor of Shark HV300/UV450/HV310 fits/XFFV300 and other sweepers 4. The bristles are made of nylon, which is strong and durable 5. Recommendation: Clean after 1-3 times after using Roomba (specifically based on the amount of cleaning in your home) 6. Weight: 13 grams 7. Dimensions: 12.5x9.3 cm, 13x10 cm, 7x7.6 cm