M12 5 Pin Male & Female Socket Panel Aviation Wire Connector,12mm Industrial Circular Connector, Outdoor Waterproof IP67,4 Sets

I didn't find any defects and they are better than some other unbranded connectors I've used. They are easy to assemble and mate easily. Note: many premium connectors have a vibration reistant nut, but this doesn't. I'm not sure I would trust these for any watertightness as another reviewer stated they leak and just eyballing it the oring doesn't appear to be able to contact the back housing and I don't feel any resistance when tightening to know it is sealing. Product details mention gold plating, but the pins look more like nickel than gold. The screw terminals have a slight yellow color to them which either indicates gold or yellow chromate coating. The screws are larger Phillips and flat combos so you can get a 3.5mm flathead on them which is convenient.

It seems to be just as good as the ones we use at work in an industrial setting. I have no complaints about these.

Nice to have for easy replacement.

Horrible. More than 50% failure rate/leaks.

Connectors look good but haven't been able to install yet due lack on instructions. Please supply

These are easy to use and worked as expected.

Connectors work fine but are an economic nightmare. Both male and female have spinning threads but the spinning part is the same size as the housing, so you constantly end up unscrewing the housing!

They are cheap but you get what you pay for, I'd recommend looking else where