This was a very cheap and easier alternative to a traditional Mosfet setup, I was very pleased! It is fantastic for my 3s Ultra 2, and while I had to strip the wires down a little to get them to fit, it worked first try and has been holding up ever since. It's worth noting that there is not a video on the OutOfDarts channel specifically for this product yet, which would be helpful for up-and-coming modders, but it did have very clear markings on it, so if you know what you are doing you will have no problem.
Highly recommend!