This is the buffer attachment for all newer models of Kirby.  This fits all G5, Gsix, Ultimate G, Diamond, Sentria 1, Sentria 2, Avalir, and Avalir 2 models of Kirby vacuums (basically all Kirby models made in the last 20 years).  

These work great at buffing and scrubbing your hardfloor surfaces.  They use soft bristles so that you don' t have to worry about scratching your floors.   Comes with everything yous see in the picture.