These rings are solid, stable once mounted properly which is done easily. Works well with high powered rifles as well as rimfire rifles. Very solid which does not come lose after repeated firings of a rifle such as a 30-06. Hard to imagine that there are scope rings for well over$100 when provide reliable service at less then $20. These rings are not flimsy which can be bent by one's hands. Even if in a vise these would be hard to bend. The rings I bought have six screws holding each ring together. Would avoid single screw rings on high powered applications.
Pros: Solid mount rings, easy to adjust, easy to remove, great value.
This review was written in the old system and had content requirements that are different than reviews written today.