Vortex® Precision Riflescope Rings are kept in pairs throughout the manufacturing process ensuring perfection from one set to another. These rings are held to an extremely tight tolerance of .0005" and are serialized, vibratory tumbled, hand-bead blasted, and anodized with Type III hard coat. Feature Tech Rugged, Lightweight, Snag-Free Design. Horizontally split for easier mounting. Commonality between fasteners and components for one-tool mounting. 100% made in USA guaranteed for life. Certified USA 7075 T6 Billet Aluminum. Type 3 Low-Glare Matte Black Anodized. Robust, Grade 8 Fasteners. Picatinny rail compatible. Specifications Tube Size 34mm Ring Height .92 inches Center Scope Height 0.92" Weight 2.3 oz. per ring Cap Screw Torque 15-18 in-lbs. Base Screw Torque 45-50 in-lbs. Tube Size 34mm Ring Height 1.00 inch Center Scope Height 1.00" Weight 2.5 oz. per ring Cap Screw Torque 15-18 in-lbs. Base Screw Torque 45-50 in-lbs. Tube Size 34mm Ring Height 1.10 inches Center Scope Height 1.10 inches (27.9 mm) Weight 80 grams (2.8 oz) Cap Screw Torque 15-18 in-lbs. Base Screw Torque 45-50 in-lbs. Tube Size 34mm Ring Height 1.26 inches Center Scope Height 1.26" Weight 2.5 oz. per ring Cap Screw Torque 15-18 in-lbs. Base Screw Torque 45-50 in-lbs. Tube Size 34mm Ring Height 1.45 inches Center Scope Height 1.45 inches (36.8 mm) Weight 2.8 oz. per ring Cap Screw Torque 15-18 in-lbs. Base Screw Torque 45-50 in-lbs. Product Videos Manuals & Parts Vortex Precision Matched 34mm Rings Low Instruction Card Vortex Precision Matched 34mm Rings Medium Instruction Card Vortex Precision Matched 34mm Rings Medium Plus Instruction Card Vortex Precision Matched 34mm Rings High Instruction Card Vortex Precision Matched 34mm Rings Extra High Instruction Card