I ordered these in the hope that I could use the Shark nozzles I bought from a thrift store with the Shark model that I bought new. I am very satisfied with the quality, the packaging and the 3 different adapters I received for the price paid! It's not the glossy, slick plastic I feared after reading bad reviews about it. Instead, they resemble sandpaper. Doesn't feel like an emery board, but when you put them together you know they won't just slide off. However, I had to press harder than when I first experimented between two different styles. I don't know why Shark couldn't simply adapt its attachments to all models. It's annoying. I recently inherited a Hoover T-Series Wind Tunnel vacuum for pet owners. It has these amazing attachments that work really well in the car to remove pet hair from the carpet, but I didn't want to have two vacuums. Now I can use Hoover with Shark with these adapters. I am very happy. I recommend you try them out. It's worth the time when you're in a situation like mine.