[gbeal]

Not sure if these are DA, or DR rings, you make your mind up.
I thought they were "DR108" but am not sure enough to state this on a listing so do some research for yourself.
The rings are sturdy, very. The ID of the ring itself is 97mm, but the actual opening with the delrin tipped screws is less, possibly 80mm or so. I used them for ages with a variety of guide-scopes, mostly 80mm guide-scopes.
The DA clamps are strong and secure.
Condition overall is excellent, but they are not new and unmarked. If you want mint, buy new.
AU$140 posted, PayPal.
PM's please.
Gary