Here are the 3 reps I currrently own.
I probably have the smallest wrist so far on this post. 6" on my left wrist (about 6.5 on my right)
1st up is 40mm Rolex Milgauss. I have all links removed and it fits just right. It is too tight on my 6.5 inch right hand.
2nd is Pam111n with rubber strap. I had to make another hole to make it a snug fit.
the last hole on stock strap fits 6.5 inch wrist perfectly.
lastly is 42mm Omega PO on Nato. I'm using the 3rd to last hole on the nato strap
I have a Trevor DSSD coming and hope it will fit. I will upload pics when I receive it.
The Milgauss and PO fits just right. The Pam is a bit big but I think its still fine.
Not sure about the upcoming DSSD though haha.
Hope this helps