I am pleased with the quality of this kit; it had everything I needed, although I found some pins easier to remove with a pair of pliers (once the pin was mostly out of the band). There are no instructions, though. It would have been nice to know that the flat, round disk on the spring bar tool (the tool that pushes out the pin) can be rotated. This lifts up the watch band and aligns the hole in the band with the tool.
I shortened three watch bands in about 10 minutes. It's very easy; just go slowly as you push out the pin. And be sure to look for the arrow that you will see inside the band, so you know which direction to push the pin out. After replacing the pin, use the rubber tipped mallet to get it to go all the way back in. There are several good YouTube videos to help you with this! I would definitely recommend this kit.