DC Male Jack Connector Adapter Measures 2.1 x 5.5mm, with Low Voltage and Screw Terminals DC Male Jack Connector/Adapter, 1. DC Male Diameter: 2.1 x 5.5mm2. screw terminals ends3. low voltage Package: 10PCS or 5 PCS/PE bag, 200 pcs/Box, 10 boxes/master carton,OEM brand name is optional!