This Multi corner shelf storage rack provide you the storage solution which is highly flexible and space saving.The pole is made from high quality stainless steel and the storage tray is Polypropylene material.You can adjust the height according to your own preference.It Comes with 4 storage trays and 2 tower bars.Each of the tray can hold up to 4.5kg and the whole rack can hold up to 18kg.Totally no tools