DIY Murphy Wall Bed Mechanism Hydraulic Hinge for Folded Bed Hardware Kit Fold Down Bed for 0.9-2M Bed 

Bed Width 200CM, the item does not contain legs and M12 screw( because beds need different longth screw)

Air spring: 95kg/pc

Material: stainless steel + cold rolled steel

Stainless steel plate thickness: 3MM