NO complaints. Crimper works great, and I've used it hundreds of times with no issues at all. This is simply the best crimper I've ever used.

Professional Crimp Tool RJ45/11/12

This tool is sold by dozens of vendors under various brand names. For example, Home Depot sells it under the Ideal brand (for a whole lot more than Amazon). It's sold here as though it's a "Ziotek" tool, but the tool itself has no brand name identification. It was packaged in a simple wrapping, rather than in one of those damnable clamshell plastic packages. There were no instructions or literature of any kind included. In spite of that, the tool is so simple to operate, no instructions are really needed.

As with all crimping tools, double check the color sequence of the wires before slipping them into the uncrimped plug. Hold the wires flat with the tips of two fingers while doing this. A common mistake is for the wires to be in the wrong order, even after checking their sequence. Another common mistake is wires too short to reach the tiny crimpers inside the plug. Consider getting a cable tester such as the Trendware TC-NT2 to verify end-to-end wiring on your completed cables.

Cut the tiny wires to 1/2" with scissors or other flat cutter, and slip them into a plug (e.g., an RJ45 type), make sure all of the wires butt against the end of the plug. (You can only tell this if the plug is transparent.) If so, insert the plug into the female tool socket while pushing the cable in so it doesn't retract while you're crimping. Press the handgrips together firmly.

The beauty of this tool is the ratchet mechanism won't release until you've crimped the plug exactly right. The reason for this is clear. Crimp with too little force and the wires wouldn't make contact and the strain-relief wouldn't be set. Crimp with too much force and the plastic plug could be crushed. The tool prevents either from happening, with the result being a perfect crimp every time. Once crimping is done, the handles release and you're done. Couldn't be easier.

The tool itself is heavy steel and plastic and is very well made. Press the handles together as hard as you can (the tool can handle it) and the crimp will be perfect. The built in wire strippers only work on flat cable; try it on round cable and it will cut some of the wires.

It's not clear there's a reason to spend any more for a crimping tool, as this one is excellent.

I was looking for some quality crimpers at a good price and magazines are selling the same thing for 50 and 60 bucks. this is a great price and the tool is heavy, sturdy and built very well. blades are sharp, can crimp both rj-11 and rj-45. good buy