These are my first crimp ends as I'm an RJ45 virgin. I'm creating a 50m long solid-core UTP cable for an internet TV project so I can get a network into a nearby concert venue. I wasn't sure if these crimp terminals would work with solid-core cables. Well, they do. They just require that you have all the leads trimmed to the exact same length and spend a minute or so working all 8 as far in as they will go, and it all works perfectly. These seem very cheap and they are very straightforward to use.