CableWholesale 33X6-50000 Shielded Cat6a Keystone, In-Line Coupler, RJ45 Female

Some reviews said something about tabs breaking and other things like that. I didn't have any problems with these.

As advertised

Nothing more, nothing less. They seemed a bit pricey to me, but after looking at big box hardware stores, they're actually quite reasonably priced and they are easy and intuitive to use. I don't know about long term use, because I simply haven't had them but for 2-3 months, but the housing is metal and they are well-constructed, so I imagine they be good fora very long time.

TL;DR - You must do some soldering to avoid intermittent shield connections through these couplers.I needed Cat6a keystone couplers to insert into a high-density patch panel. Many others I was seeing had either a larger body or a right-angle rear jack - neither of which would have fit my panel.The gold standard for shielded cat6a 10-gig rated couplers of this size are the TrippLite keystones. But they have a list price for each one of over double the cost of this 8-pack (even at the most discounted online price, 1 TrippLite costs more than 8 of these). I have some of the TrippLites, but bought them as surplus at a huge discount.So, I connected these bargain couplers to my (coincidentally, TrippLite brand) network cable tester, and wiggled the cables to see how well the connections held up. What I realized is that these are made out of 2 metal halves, and they are not truly electrically bonded. So, while all 8 pins handled internally by the coupler remained solidly connected throughout, a bit of movement (as might happen when seating the keystones or attaching cables) would cause intermittent connections of the shields at each jack.Firing up the soldering iron, I cut a short length of wire and soldered it across the gap on the side opposite the keystone clip of each one.A few minutes later and they all tested perfectly, and I had saved at least $125.Bottom line: If networking is your job and you need shielded couplers that just work (and ultimately your employer or a client will be paying), buy the TrippLite couplers. If you're footing the bill yourself, and don't mind a bit of time at the bench, these can be a real bargain if you're willing to do some soldering.