Review on High-Quality 3 Pack RJ45 Coupler - Extend and 🔌 Connect Ethernet Cables with Cat7/Cat6/Cat5e/cat5 Compatibility - Female to Female, Black by Alex Jones

This was exactly what I needed. The temperature sensors we buy have short cables and an RJ45 connector. So we use them to connect to our own CAT6 to extend to our switch. They work great and are not flimsy. Solid construction, well made, would probably survive stepping on it with my boots. I unpacked them all upon receipt and they all worked perfectly. I would definitely buy them again.