XT50s are big 6mm sprung gold connectors that have a large contact area, making them great for high power applications up to 250A!
The male connector uses a collet style spliced contact area to provide more surface to surface contact than standard gold connectors which use a thin mushroomed sheet as a spring. The connectors come Nylon housing. Easy to solder and use, they are perfect for large batteries, esc or motors!