DO NOT BUY! This broke the very first try I tried to use. Apparently terribly cheap inside. The exterior is strong and durable, but the internal components that allow it to rotate broke immediately when I tried using it on an already loose spark plug in my truck. Getting it in the limited space, removing the plug was quite a challenge. But after it broke, it made the job ten times harder. Like I said. It looks great, the external components feel solid and great, but the cheap inner metal bridge is junk and if you use it on anything that has even a little bit of resistance, it will break the metal inside and unscrew it. Big disappointment and waste of money. And also innyhe @$$ excruciating pain when it broke and metal shavings fell into my engine block where I had the spark plug removed which cost hundreds to have the whole engine professionally dismantled to clean. DO NOT BUY THIS PRODUCT!