Diameter: 30mm Height: 32-38mm (1.25-1.50in) from bottom to ring center Ring Width: 26mm 1" Weight (net): 150g / 5.8oz Finish: Black matte Material: 6061-T6 Mount: 1913 Picatinny 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 inches/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-3040