Amphenol ACPM-GN Mono

This is not the cheapest connector around, but for the little extra price you actually get a pretty decent quality. The belt clip type tension reliever is not the best possible out there, but it gets the job done and it's the best version of it I've seen so far. The cover also has some semi hard rubber to support the cable even more which, in my opinion, works better than the spring support you see on many other models. As an added bonus, it comes with a rubber tube to put over the connectors to protect them while you screw the housing on.

Overall, this is a very good product and would recommend this if you are looking plugs for patch cables or applications where you don't need to continuously (read: over dozens of times per day) unplug and re-plug the wiring.

PS: Works really great with Cordial CIK 122 cable. It's like these were made for each other.