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 Fittings include: Hex key Suggest 25 inch / pounds (can accept max 45 inch / pounds) torque force for big nut when installing the mount on the picatinny rail Item N°: XASR-3045