Designed to fit 3/8 inch or 11mm dovetail. This is possible by using a solid steel asymmetrical reversible clamp that can be flipped 180 degrees for best fit.Specifications and Features: Highly designed for the toughest situations Quality machined with precision and accuracy Mounts that will be used for any environment The Warne Scope Mounts 22 High Matte Tactical Rings are 1 inch high Warne steel rings for your 22 caliber rifle Color is matte black