That's the older turbo brush if it had glides, and would have been supplied as a freebie with the Powa 4000. Only the 4100 had the turbo brush as part of the standard tool kit, and even then it was in place of a combination head. This, I always thought, was a bit odd because it meant the cleaner had nothing for vacuuming hard floors. The floor mop attachement was also included as standard with the 4100.