ITEM NAME:4PCS DC Power 3.5x1.35mm Male to 5.5x2.1mm Female Adapter Connectors JRFT Product Name : DC Power Connector; Connector Type : 5.5 x 2.1mm Female to 3.5 x 1.35mm Male Main Material : Plastic, Metal; Color : Black,Silver Tone Size : 39 x 12mm / 1.5" x 0.47"(L*W).Connector Type : 5.5 x 2.1mm Female to 3.5 x 1.35mm Male. Color : Black,Silver Tone.