Review on UGREEN RJ45 Coupler Ethernet Extender Connector (5 Pack) – Cat7 Cat6 Cat5e Adapter Female to Female, Black by Brian Schultz

These are good connectors. Testing the lines I participated in, I noticed less than a 5% drop in speed. A good substitute for starting a new line would be prohibitive in time/cost. I found them to be about 2x larger than most connectors I've used in the past. This is the first set I've bought that's rated Cat6. So this may be a difference as others I've bought have only been rated up to Cat5.