Review on 💡 (Genuine 18AWG 43x2pcs Copper Strands) 20 Pairs DC Power Pigtail Cable, 12V 5A Male & Female Connectors for CCTV Security Camera and Lighting Power Adapter by MILAPEAK (2.1mm x 5.5mm, Extra Thick) by Donnie King

So far 3 of them had open contacts, either ground or middle contact. The quality of the wire was also very poor. Over half the pigtails I've used show signs of corrosion on the wire. This is corrosion that runs the length of the wire. They were only bought in January 2019. They shouldn't rust by now. What did they do, did they do it outside in the rain, or did they use flood damaged wire? As another said, the solder didn't tin on many, it just crumpled. This means that to use it I had to cut, clean and tin the end myself. Corroded wires made tinning difficult. A lot of flux was needed, which of course sucks up the wire strands and will become a corrosion nightmare in a few years. The only reason they got 2 was very cheap so I'm still ahead of those selling less for almost the same price.