AGR631-08 – 8″ Soft Button-Lock Brush

8″ Soft Button-Lock Brush. Use this soft bristle brush with the AGR6XX series brush system to clean round and rectangular delicate duct work. The soft bristles on this brush make it ideal for most flexible duct work, and duct work with interior insulation. AGR6XX series brush cores can be refilled with new bristles as they wear, to reduce the cost of on-going operation. With the use an optional adaptor(AGR695), AGR6XX brush head can be used with nylon and fiberglass extension rods.