Yueton&reg; 10pcs 2.1x5.5mm Male DC Power Plug to 9V Battery Button Connector Hard Shell Buckle Cable (T Type) DC male plug hard shell 9v battey cable DC plug type: 2.1 x 5.5mm male to 9V battery clip Material(External): hard plastic Great to use for LED strip light or arduino Package included 10 pcs T type hard shell 9v battery clips