Amazon.com : Hilitchi 40 Pcs (10 Pairs x Male + 10 Pairs x Female) 5.5mm x 2.1mm Female Male DC Power Connector, BNC Male Balun Connector for Led Strip CCTV Security Camera
Definition of BNC connector | PCMag
The BNC Connector And How It Got That Way | Hackaday
Holland SLC59-BNC BNC Male Compression Connector - RG59 | ShowMeCables.com