Whilst this item is stated to be compatible with the Dyson v7 motor head it looks identical but after installation it was found that it would not rotate. Upon further inspection, I noticed that the components that the brush is supposed to go into don't touch for the brush to rotate. The pattern on the inside of this new brush is too wide compared to the smaller Dyson brush. A smaller pattern can fit around the component that rotates the brush. Still looking for the correct brush bar, but itβ¦