Using these extension pipes is easy. Just connect the pipes together at the ends, and they'll reach a total length of 90cm. Attach the top pipe to your vacuum cleaner and the small tool holder to the attachment on the top pipe. These pipes are suitable for many popular vacuum cleaner brands like Electrolux, Volta, Vax, and some Nilfisk models. When using, make sure the connections are tight to prevent air leakage. For maintenance, wipe the chrome - plated surface with a soft, dry cloth regularly to keep it shiny and free from dust. If there's any dirt inside the pipes, you can use a long brush to clean it out. Store the pipes in a dry place to avoid rusting.