The AIR42250D FDE Leaper UTG ACCU-SYNC 34mm High Profile 50mm Offset Scope Ring Mount is a Precise Fit on MIL-STD-1913 Picatinny Rails. FDE Scope mount is Precision CNC Machined from Aircraft Grade Aluminum and Finished in Flat Dark Earth Cerakote®. Significant Lightening Cuts to Massively Reduce Weight Without Compromising Durability. Radiused Edges and Corners to Prevent Snagging, Scratching, or Tearing of Other Gear and for Effortless Access to Scope Windage and Elevation Turrets. Single Mount Utilizes Locking Torx Screws and Square-shaped Integral Recoil Stops For a Secure Zero Hold. 22mm Saddle Height, 50mm Offset Distance, 100mm Base Length, High Profile Fits 34mm Tube Optics with up to a 77mm Outer Objective Diameter. Includes a T20 Torx Wrench for Simple and User Friendly Installation. We recommend to tighten the ring top screws with a torque value of about 25 inch-lb and the side plate screw with torque value of about 35 inch-lb.