The jack is stereo. It's heavy and feels sturdy. Doesn't magnet anywhere. The terminals are strong enoufg and seem to be ade of brass. My mutimeter is 5h1t, but at least it shows the connector doesn't add to the end-to-end resistance. The chrome сoating got some minor dings here and there, so don' buy it for your DIY hi-end combine... Otherwise everything looks OK to me. The parcel took just over 2 weeks.
No rust detected. It's mostly brass guys. Well, there might be some coating imperfections, which is OK I think considering the price.
all ok