These replacement parts fit for 900 901 Robotic Vacuum Cleaner Keep for 900 901 Robotic Vacuum Cleaner running at by changing the consumable replenishment kit every 2-3 months,depending on your use frequency. Colour:Gray Material:plastic Package Contents: 2 x main brush 3 x filters 6 x side brush Only the above package content, other products are not included. Note: Light 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.