Seekins rings (1062006) Built to Picatinny Specs from 7075-T6 aluminum. 30mm medium height. CNC Machined 7075-T6 billet. Type III class 2 hardcoat anodized finish. Center lug machined into place. Grade 8 T25 Torx screws. 4 screw cap. $110 shipped each set (I have 2 sets)