I just came across this bit in my toolbox, which I'm fairly sure came with an installers drill bit (54" long flexible bit, with a hole in the end for pulling wires back through).
It's a standard screw driver bit, tapered at the end (though not enough to actually be a flathead bit) and a hole through it. Any ideas what this is for?
Best Answer
I think it would be used for pulling or twisting something. For example, you would attach a wire to it, then engage the drill or manually rotate, thus twisting or rotating the wire. It would also be used for fishing the wire thought a wall. The rotation would allow it to more easily pass.