Talley Scope Mount/Ring Combo features a 30mm tube diameter and 0.600 (1.19 centerline) Medium mount height for Tikka T1 and T1x rimfire bolt-action rifles. This 2-piece set features direct-to-receiver 1-piece ring and base construction that attaches via 6-48 Torx screws, bypassing receiver dovetails. Made from aluminum with a black anodized finish, this set weighs 2.10 oz and provides 0 MOA offset. 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.