(Stock levels may vary, Shipping times are direct from supplier) LIFETIME WARRANTY. If you ever have a problem, no matter the cause we promise to take care of you. Learn More » 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. Tube Size 1 inch Ring Height .76 inches (Weaver) Center Scope Height .76 inches (19.3 mm) Cap Screw Torque 15-18 in-lbs. Base Screw Torque 45-50 in-lbs. Weight 40 grams (1.4 oz) 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 & Weaver® rail compatible.