Highquality wheels allow extreme mobility from classroom to classroom. The side panels are metallic and have special holes and slots to support makerspace tools and storage bins, while the wooden top can be used as a workstation. There are 3 types of trolleys, one, two or three-coloumn ones, with each column fitting 4 deep trays of 15cm or 8 shallow trays of 7 cm. The rails are adjustable in height so that various combination of trays can be accommodated.