I'm asssuming you're talking about RJ45 crimping tools. If so, the only one to get is the Platinum tools
EZ-RJ45. The plugs allow you to push the wires all the way through, so you know that they are in the correct place, and not caught halfway in. The current
featured tool section shows how the wires go through. The only thing to watch out for is that you get the correct connectors for the wire you are using. Cat6 and greater uses a different gauge wire than Cat5E, so you need a different connector. Trust me, I learned this the hard way.