Light-duty Rack: easy to assemble and to add add-on units, ... nuts bolts or tools required, main parts:uprights and shelves Light-duty Rack:Common Size:450(W)*600(L)*1800(H)MM ... -200KG/LevelShelf: Wooden,MetalUprights:38*38*1.8mm,40*40*2.0mmStrengthen:One or Two or None,as your capacity. Light-duty Rack