Feature A Designed for >500 Meters / Yards Long Range / XLR Shooting, Fit Max 56mm Scope Objective Lens A 35mm 1.4" Bottom to Ring Center, Six Screws Per Ring, Extremely Accurate w/ Full CNC Machined A 20MOA 6MIL, Hard Anodizing, 21mm Picatinny Mount w/ 3 Crossing Bolts & Anti-Retreat Rings A Can Accept Max 45 Inch / Pounds Torque Force for Big Nuts When Installing the Mount on the Picatinny Rail Specification A Diameter: 34mm A Overall Length: 154m / 6.1" A Overall Height: 59mm / 2.3" A Mount Length: 154mm / 6.1" A Ring Width: 50mm / 2.0" A Central Height: 35mm / 1.4", bottom to center A Ring Length: 26mm / 1.0" A Gap Length: 70mm / 2.7" A Material: 6061-T6 aluminum alloy A Weight: 250g / 8.8oz A Mount: Picatinny A Finish: Hard anodizing in black matte A Screws per ring: 6 A High-durability aluminum alloy in black matte, designed for big recoil calibers A Do not use over 18 inch / pounds of torque on the scope rings&'; screws A Suggest 25 inch / pounds (Can Accept Max 45 Inch / Pounds) torque force for big nuts when installing the mount on the picatinny rail A 20MOA 6MIL Style and designed for hard and rigorous use A With hex key and retail package, hex key can be used to fasten the clamp nuts