Originally Posted by
D-MAIN
dont get these, they suck! they dont grab screw they just cut into it and pretty much drill it, not take screw out, i have these and are the worse item i ever bought
If you do not use the boring side of the bit provided get the results you have explained. You have to use their boring bit which prepares the hole properly for the extracting side to work. In addition, both sides of the bit need to be run in reverse. I noticed the boring bit on some of my other ones needs to be run forward.