These rings are for use with a 30mm scope tube diameter. They are a medium rise ring, measuring 1″ from the base to the scope center line.
These rings feature a hex nut for clamping the rings to the scope rail.
Note: This product is not manufactured by Addley Precision, but is a quality import. Like all of our products we sell, we stand behind them 100% and will ensure that these products meet all of your expectations.