Loss product. Because it was KTC (domestic), I bought it with confidence, but the hole of the inner was small and it did not enter. Although I tried two units but it was useless, it was returned that there was no madness in the dimensions when they were inspected. Because there is no meaning of a combination, I will not buy it again.
In the tool shop nearby, there was only things with an insertion angle of inches and I was looking for it because I can not use it unless I also buy a socket converter. Working time has been shortened very conveniently Manufacturers are also domestic, so I am relieved.