I bought these to help install a remote start system in my car. They were very comfortable and I couldn't imagine working without them. What I really like is that you can connect two wires very quickly and efficiently without damaging either wire i.e. if you connected the wrong wires. Together you can just take them off and not have to deal with a big mess like stripping, splicing and soldering the wires together. In my case, using these connectors saved me from having to splice and solder about twenty wires together in a confined space in my car's dashboard. They have greatly simplified the work and fully amortized the investment.