5.5x2.1mm male / Female DC Power Plug / Jack Connectors for LED Lights, CCTV & Electronics - 1 Pair (1 male & 1 Female Connector)
Amazon.com: HCFeng DC 5521Plug to Big Clamp Test Cable, 12V DC Male/Female Jack to Alligator Clip Cable DC5.5mmx2.1mm Cable with Double Alligator Clips for CCTV Camera and Lighting[4pack -9.8inch/25cm] : Electronics