The Pilot Max Replenishment Kit includes everything you need to help maintain your robot’s cleaning performance in one convenient kit. Replenishment Kit includes one Battery Pack, two HEPA Filters, two side brushes, one Main Brush and one Rubber Brush. What’s In The Box: 1 Pilot Max Battery Pack 1 Main Brush 1 Rubber Brush 2 HEPA Filters 2 Side Brushes