Talley Scope Mount/Ring Combo features a 1 tube diameter and Low mount height (Front: 0.400, Rear: 0.550) for Remington 700 Long Action rifles (compatible with 721/722/725/40X and Bergara B14/Christensen Arms LA). Crafted from black anodized aluminum, this 2-piece set weighs 2.20 oz with 20 MOA cant. Unitized ring and base design mounts direct-to-receiver via included 6-48 Torx hardware. Safety Note Always ensure the firearm is unloaded before installing or adjusting any optics or bases. Verify proper torque specifications during installation. Improper mounting may affect accuracy and safety.