Philmore 12-ft Heavy Duty (18AWG) DC Extension Cable Cord with Male to Female 2.1mm x 5.5mm Connectors 18awg wire; 48-1032 12-ft heavy duty (18AWG) cable Male 2.1mm x 5.5mm connector on one end; female 2.1mm x 5.5mm connector on other end Black 18 AWG zip cord