The package contains 1 hard bristle vacuum brush and 1 soft bristle vacuum brush. and the inner diameter of the interface is 32mm. The hard bristle vacuum brush is made of PP and the soft bristle vacuum brush is made of horsehair. The two brushes can be used for wet and dry purposes, effectively cleaning dust. It is suitable for most vacuum cleaners with a 32mm brush head interface and is a practical accessory for household vacuum cleaners.