Phantom YoYo DC 2.1 x 5.5mm Male Plug Connector Plastic 9V Battery Holder w Cover Product Name : Battery Holder;Body Size : 6.9 x 3.4 x 2.2cm/2.7" x 1.3" x 0.87"(L*W*H) Connector Length : 19.8cm/7.8";for Battery Type : 9V Battery Connector Type : 2.1 x 5.5mm Plug;Material : Plastic, Metal Color : Black, Red;Net Weight : 23g Package Content : 1 x Battery Holder w Cover