Talley Scope Mount/Ring Combo features a 1 tube diameter and High mount height (Front: 0.600, Rear: 0.733) for Winchester Model 70 rifles with 0.860 rear hole spacing (Post-64 Short/Long Action compatible). Crafted from black aluminum, this 2-piece extended set weighs 2.60 oz with 0 MOA cant. Unitized ring and base design mounts direct-to-receiver via included 6-48 Torx screws to prevent alignment errors. 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.