DC 5.5x2.1mm Male Connector 8x1.5V 12V Battery Holder Case Box Wired ON/OFF Switch w Cover Pack of 2 Item NameBattery Case Material : Plastic, Metal Item Size12.6 x 7.1 x 2cm/5" x 2.8" x 0.8"(L*W*H);Cable Length( Each ) : 14cm/5.5" Battery Type : 8 x AA 12V Plug Type : DC 5.5mm x 2.1mm Male;Battery Type : 8 x 1.5 V AA Package: 2 x Battery Case Holder w Cover,Note:the 12v battery pack wire is black(not red black wire)