International Dimensions Scope rings are for standard riflescopes 25.4mm1 inch 30mm 1.1inch and 34mm 1.34inch scope tube. The red sheet plastic can change the tube diameter
Perfect Immobility With red anti-skid sheet plastic, Bevel locking, longer screw, and prevent loosen gasket etc. As showed in our photos.
Have two mounting screws for the bases and four screws for each of the two scope rings. It will hold the scope more securely than a single screw on both sides
High Quality Processed from the aviation aluminum CNC of GB 6061.