PHC DC-3Z 2.1mm x 5.5mm DC Barrel Plug Splitter, 1 Male Plug to 2 Female Jack 1-to-2 2.1mm x 5.5mm Jack Splitter 2 Female Jack - 2.1mm ID x 5.5mm OD Male Plugs - 2.1mm ID x 5.5mm OD ID - refer to inside diameter; OD - refer to outside diameter Max Amp - 2 amp