Review on Dinggsun RJ45 Coupler 10 Pack - Blue Ethernet Extender Connector for Cat7 Cat6 Cat5e Cables - Female to Female Adapter by Chris Sisley

Couplings work great and do their job. I have two 20 foot Category 6 cables that needed to be extended and instead of buying two more cables I bought them and spliced two 5 foot Category 6 cables together at the ends. No loss of speed, no interference, no so far no differences. I will update if that changes.