Like its namesake cloud, the Arcus12 shelf floats in a thin minimal line of 18 gauge brushed stainless steel. The 12 ultra clear borosilicate glass jars with beech wood lids come empty and can be filled with spices, buttons, or whatever you desire. Easy to grasp, easy to display and dispense contents, get organized with this sleek jar and floating shelf set. Mounts to the wall with two screws, included. Each jar has a capacity of 80ml/2.7oz.