This Weaver 4-Hole Skeleton Rings are in a matte finish and available in many heights, making it possible to utilize them in a wide range of shooting situations. The rings will give you the options between 1 inch and 30 millimeters as well as between xx-high, extra-high, high, and medium. The finish is a matte black, and the rings feature no slip and no strip Torx screws for maximum security. The rings also utilize the famous Weaver Cross Lock construction and aircraft-grade aluminum that is lightweight.