I see a lot of 4 or 5 stars for this socket. I give it 1 star but think its a ZERO. I am shocked that it has such a high rating! The socket is made of SOFT metal coated with a black paint. I tried to remove my O2 sensor (which was stuck) with this socket and after only TWO attempts with a 3/8 socket wrench. it WARPED and lost it's shape! I was stunned at how easily it lost its shape with just a racket and hand force. CHEAP tool that might work for removing an O2 sensor that was previously treated with anti-seize? This product is not a hardened tool and wasted my time.