M16 bolt & nut takes 24mm spanner / socket...

I wanted to do some tests - micrometer etc. measure elastic and
plastic (permanently deformed) extension.

Was thinking 3/4inch drive (square) so wrench much stronger than bolt.

Want to keep wrench handle near horizontal, where bolt axis is
horizontal, so can haul on it.

Choice...?
Could get
* 12-facets (2 angles - 15deg increments) chromed hard socket
* 6-facets (1-angle - 30deg increments) tougher steel sockets.

The 6 facets impact wrench socket is the stronger / tougher
- but the 12 facets one is totally up to the job and gives twice as
many angles it can go on?

Any experience or experience on this and which is better choice?

Rich S