Rack & Pour Heavy Duty Wall-Mount Units are available in four or six bottle configurations with a chrome finish. Wall-mount units must be affixed to a solid wall or to the studs behind a finished wall in order to support the weight of your bottles. Mounting screws are not included. Accepts bottles up to 1.75 liter. Rack & Pour measuring heads ship with rubber corks installed on the stem and additional natural corks are included for use on bottles with larger openings.