VersaRing Universal Scope Rings Black 30mm Hinge Heights Included: Low, Medium, High;Scope Tube Size: 30mm;Low Profile Mounts;Double Base Fastners;Fits Weaver or Piccatiny;Material: 6061-T6 Aricraft Aluminumtable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Item Category Code: 4000 Product Group Code: 4000C Product Sub Group 1: 4000C2 Inactive: No