This set includes 3 Foamanizer sections, 16 spacers, 12 long acrylic rods, and 6 medium acrylic rods. To assemble, first place the spacers on 2 long rods and 6 medium rods. Next, insert these rods into the marked holes on the bottom layer and slide them down into the middle layer. Finally, press down the top layer and load it with your tools and thread.