Very good product. It unscrewed the bolt as if it were brand new. I give 4 instead of 5 stars because the ratchet needed is not the classic 1/2, but it requires 3/8. The 1/2 is too big for it. You need to have a 3/8 ratchet to fit the socket. If you don't have one and you are in a hurry to get the job done, you can do the following trick. I wanted to unscrew a 12mm bolt. I took this socket and put it inside a classic 17mm socket I had. That way, I used the 1/2 ratchet I already had.