Have this part bought due to the positive reviews. At first I had trouble that part reasonable to bring to my vacuum cleaner, but it helps to look carefully. Here's a tip for future buyers: where the stem end of the upper shell are located at the bottom guide which must be inserted from the top of the bracket. With the assembly so the vacuum cleaner handle, where the locking button sits to begin. And then slowly work your way down (the locking button on the nozzle press down so that the knob slides into the recess of the upper shell).