Some keystone jacks just don't fit. It's really annoying... I would have rated this lower... HOWEVER, it was very durable with all the force I used, didn't brake... that's got to count for something... you'll just have to work a little extra to either file down or use something to force those jacks in, not always, but happened to me for banana posts and hdmi couplers...

Needs to use slim keystones. Standard prime cable punch down keystones don’t fit

this is a tight fit so you'll have to be careful of what keystones you use with it and their width, but it works well.

Only 4 stars because the fit is way too tight. I had a real tough time getting 2 Cat5 keystone jacks to fit side by side. If you are putting Cat5 keystone beside a coax or anything else, you are fine. They fit on top of each other as well, but side by side is an issue. (at least the one I received)