PRODUCT FEATURES Heavy Duty, 30mm Diameter, 32mm / 1.25in Center Height, High Profile 6 Torx Screws Per Ring, Extremely Accurate w/ CNC Machined, 11mm Dovetail SPECIFICATIONS Diameter: 30mm Height: 38mm / 1.25in from bottom to ring center Ring Width: 25.4mm / 1in Weight (net): 125g / 4.4oz 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 torque force for big nut when installing the mount on the picatinny rail