Used to vacuums main part and flexible vacuum brush or nozzle You can cut and use 3 specifications and sizes according to your own requirements. You can try to combine this adapter together another adapters to have more options Adapter for Power Tools: This adapter is a bridge between your vacuum and power tools! Adapter with 5 layers is compatible-with many vac-hoses With this adapter, you can use the European version of the floor brush and other nozzles Made from rubber, for use.Easy to install and use