If you do any installation of phone or computer equipment and need to "punch dow" wires into insulation displacement channels this tools works very well. It is easy on th hands and does not leave the hands sore or cramped.
The only problem I had with this tool is that it didn't always cut off the excess wire on the side of the plug and I would have to use a pair of snips to finish it. This was my first experience with doing anything like this, so it may have been my technique and not the fault of the tool. The punch down part worked flawlessly.
The tool made the job of attaching to a keystone jack much easier. However, It took some effort to get it to snap off the ends of the wires, even after I made sure I had the tool in the correct position. Even so, I'm pleased with the results.
This punch-down doesn't seem to have a great blade. I had to do 10 keystones, and I really struggled to get this to snip the cables off. If you only have to do a few punchdowns, this may be an okay solution, but I have a feeling that I may have to redo my connections and will have to buy a better alternative.