Here's the problem on Japanese vehicles 6mm x 1.0 bolts will strip out on an occasional basis in aluminum threads in frames, blocks, etc. Well, helicoil or similar works well but only if there is access. The problem with tap drivers is they are huge. I guess for leverage but a lot of times if you have to tap on the vehicle things are in the way of the tap driver that comes with kits. And for whatever reason tap makers make the ends of taps of a size that doesn't fit any metric or standard socket. These tap sockets are the answer. I don't use them often but when I need them they really help out a lot. Usually after the part store has closed.
Rating: [5 of 5 Stars!]