My previous Nilfisk came with the standard patio cleaner. It immediately broke after ingesting a tiny bit of concrete that came out of the drive. Nilfisk replaced it with a slightly larger one, good on them.
Been using it for years until this spring when the pressure washer broke (think there was water in the pump over winter)
Got a new one and it was cheaper to get another bundle pack with a new cleaner. The new cleaner is much much faster, I think the old one didn’t have enough flow rate so you had to move it very slowly, the new is much faster and more effective. Tried the old one on the new unit and still rubbish.
It’s a Nilfisk Core 140, other improvements over my old one (a centennial I think) are the hose reel that actually works, a hose that is much more flexible, and you don’t need to disconnect it from the machine to wind it up.