ITEM NAME:5 Pcs IMC 5.5mm x 2.1mm Female DC Power Socket Jack Connector Adapter FT Description: DC Power Plug with plastic construction and strain relief. Socket Jack Connector Adapter Product Name : Female DC Power Connector; Type : Female Diameter : 2.1mm x 5.5mm Total Length : 4.4cm / 1.7" (L*W*H) Color:Black.Socket Jack Connector Adapter. DC Power Plug with plastic construction and strain relief.