Fit Model: Compatible with for S7 Robot Vacuum. Special Filter: The filter adopts E11 grade filter material to filter dust efficiently. For performance, recommended replace filter in every 2-3 months. Side Brush: Side Brushes work with S7 Vacuum can penetrate deep into corners and edges to remove more dirt, debris. Replacment Tips: Recommend replace replace parts every 2 to 4 months depend on the using situation. colour:White+black Material:plastic size:13.5cm Package Contents: 4 x Hepa Filter 6 x Side Brush 1 x Small Brush with Screw Driver 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.