Taousa 70224 Tactical 30mm/1" 25.4mm Scope Ring Mount Picatinny Weaver Dual Ring Quick Release Cantilever Includes 1x quick release rifle scope mount, 2 pairs of rings, 2x L wrench key for adjusting the center pin Made from aircraft grade aluminum alloy. Ring Diameter: 30mm(without insert)/1 inch(with insert) Black rifle matte finish, offset design for better eye relief position Fit for Picatinny rail scope whose width is 20mm Taousa is a registered trademark owned by Taousa LLC. Unauthorized sellers are not allowed to list their products under this listing