3 x RS-M40 Magnetic Rack - here is a perfect package deal if you intend to have multiple racks connected. Each RS-M40 measures 40 cm, so this 3 pack will give you a rack system of 120 cm in total.
The racks comes with a set of blue connectors installed 🔵, but if blue isn't your color a set of grey connectors comes in the box for personal