uxcell Household DC Power 5.5 x 2.5mm Male to 5.5 x 2.1mm Female Jack 10pcs Black Product Name : 5.5 x 2.5mm Male to 5.5 x 2.1mm Female Jack Adapter Connector;Material : Metal, Plastic Overall Size : 4.1 x 1.2cm / 1.6" x 0.47" (L*D) Main Color : Black, Silver Tone Total Weight : 49g Package Content : 10Pcs x 5.5 x 2.5mm Male to 5.5 x 2.1mm Female Jack Adapter Connector