The concept and execution of this product accounts for approximately 85%. The good thing is that there are additional details just in case. The hands work well enough. The table clamp keeps it securely in place. Some things that could be improved are how the alligator clips are held in place. I think the thumbscrews do the job well, but the clamps are a little soft. Also, the hands are not held exactly where you want them to be. A little give and take and it works. You really can't go wrong for the price.