Thanks for the info. I had not seen these before. My previous ones were a set of drill blanks in Fantom handles, similar to the old Bolink Torkers set. Being that the tip is not easily replaceable, I assume these last a really long time. It looks like I may need to find a new place to keep them in my box. The handle looks fairly large. I don't see any dimensions on them. Do you have an approximation of the size?

Who do you recommend for nut drivers?