Sukhson India Megacity 4-Layer Storage Rack with Wheels help to store . It is made of durable plastic material, which is easy to clean. very easy to assembles. Keep it in the kitchen, bathroom or bedroom or anywhere to keep and store your household necessities. How to assemble the product? 1)Begin with assembling the trays one by one. 2) Place one of the trays inverted (Upside down)on a strong surface and fixate the four connecting plastic pipes on the corners of the tray. (any tray can be used as the sizes don’t differ from tray to tray) 3) Now place one more tray on those plastic pipes and fixate connecting pipes in the same way as before. 4) Repeat the process one more time. 5) Now fixate the connecting pipes and then add the wheels to it. Add the caps to fixate the wheels firmly with the connecting pipes. 6) Now carefully and slowly invert the entire rack trolley on the ground where you wish to place it, without applying any force to avoid breakage. Your rack trolley is ready for use!