Item: XASR-3045 The Vector Optics X-ACCU 30mm Adjustable Elevation Dovetail Rings are precision-engineered scope mounts designed to fit 11mm dovetail rails, offering adjustable elevation to accommodate various shooting preferences. Crafted from high-quality 6061-T6 aluminum alloy, these rings provide robust support for your optics. Technical Specifications Diameter: 30mm Height: 35-41mm (1.4-1.6in) from bottom to ring center Ring Width: 26mm / 1.0in Weight (net): 140g / 4.9oz Finish: Black matte Material: 6061-T6 Mount: 11mm dovetail Unique construction provides strength well with steel cross-bolt Six torx screws per ring will hold your scope under any conceivable situations Perfect alignment and superior accuracy Do not use over 18 inch / pounds of torque on the scope rings' screws Suggest 25in (can accept max 45in) torque force for big nut when installing the mount on the picatinny rail Inside The Box Vector Optics · Dovetail Scope Mounts 30mm Adjustable Hex key