Review on 🌞 SolarEnz SAE Solar Connector & DC8mm Adapter Cable for Explorer 160 240 500 1000, GZ Power Station: Portable Solar Panel Compatibility by Allen Wagner

The negative wire is completely disconnected where it should be soldered to the outer 8mm stem. Poor wire soldering (almost no solder) to the outer barrel. Extremely poor workmanship and materials. I doubt this has been verified after the connector was molded. If I didn't need it immediately and didn't want to personally struggle with returning it to Kols during the pandemic, I would have returned it. Don't waste your money and time with this product!