Use this on my Dyson V7 Tier. The assembly is normal, but the nozzles are tiny. "Is that an ant bait?!" Anyway, they're super cheap. Came in an unmarked brown box with dangling needles inside. The ports are very small compared to the real ones. On a small mount, the button broke and had to reset it. Next time I'll spend more money for a real bargain. They mostly work for what they are, but they're not very well designed.