What kind of connector is this?

Im trying to install something in my truck. I found a plug that's like 3/4 empty it's only going to 2 gauges I had installed aftermarket. The plug that is runs to has a lot more female connectors that are factory ran. In that factory ran set I found a spare ignition wire so I put the fuse in and its got power.
So now I'm trying to find what this silver male adapter is so I can order it and install it on the wire I'm going to. I think they are called technician terminals but can't find one that looks like this.
This plugs into a wire harness that u can see in the background any idea where I could get some? Local orileys is idiots...

 

I Looked at them before and they are different then the one's already in there. Can you put different styles in the wiring harness lol?

 

Thank you guys I think I found one that would work. Ordered em off Amazon.