The training aid is not only effective but incredibly simple to use. It's designed to attach to the end of your grip and give you instant feedback if your wrists are flicking through impact. This works not only your full swing but chipping or pitching swings as well.
Does lag shot swing trainer work?
https://www.youtube.com/watch?v=nT6pSjyNmh4
Are golf swing trainers worth it?
The simple answer: Yes, most golfers can benefit from a quality training aid, but they don't solve every problem. It's rare that our editors here at GOLF.com come across a training aid that flat-out doesn't work, but we've also never sampled a training aid that's perfect for every golfer, either.