WINOMO 2Pcs 4 Gauge Wire Couplers Audio Car Brass Terminal Butt Connectors for Car

Great product took a long time to get though.

Bought a amplifier wiring kit that came up a little short on the wire and had to add more . This is exactly what I needed and worked great .You will have to shrink tube the couple as it is NOT insulated .

Worked as intended. I wasn’t sure if they are insulated so I covered with tape and heat shrink tube just to be sure. Good firm hold and connection.

They work

I've ordered 4 sets of these now, in 2 batches. First batch I remember working great. Second batch, 8 screws in total and 5 of them were too short so they got screwed in too far (as shipped), so far that they went sideways and couldn't be unscrewed. I was able to screw them out _through the connector_ but it definitely damaged them and wasn't fun. Quality (control) is a thing.

Quick and easy. Like the reusability of it.

Great for putting wires together and pretty good quality

I was very pleasantly surprised at how good these worked and the quality of them.