Replace thefilter every 2-3 months to maintaincleaning performance while reducing infiltration of dust, pollen and other small particles. Regularly replacing flexible beater brush & bristle brush maintain cleaning performance and reduce battery drain. Snap into place for quick and effortless routine replacement without tools. Accessories Kit compatible for ION Robot AV751 S87 R85 RV850 RV850BRN, RV850WV, RV851WV, RV700_N, RV720_N, RV750_N R76(RV761) (Not Fit RV700, RV720, RV750, RV750C). If brushes bent due to shipping, recover them by simply soaking with warm water for a while. Colour: black and white Material: plastic Package Contents: 1 * main brush 3 * filters 6 * side brushes Only above package content, other products are not included. Note: Light and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.