Feature A Features VAS(TM) Series X-MOD Interface Supporting Red Dot Plates, Picatinny Rails and Modular Attachments with Full System Compatibility A 34mm Dia. Rings, 38 mm / 1.50 in Center Height, Optimized for Stable Optical Alignment, Balanced Rifle Setup, and Consistent Shooting Performance A 5-Axis CNC Machined 7075-T6 Aluminum Delivers Maximum Rigidity, Precise Dual-Ring Alignment, and Reliable Recoil Resistance Up to .50 BMG A 20m Black Anodized Finish Provides Enhanced Scratch Resistance, Corrosion Protection, and Long-Term Durability in Harsh Environments A One Piece Heavy-Duty Clamping System with Integrated Recoil Lug Offers Rock-Solid Stability and Repeatable Long-Range Precision Performance Specification Specification Details Ring Dia: 34 mm /1.3 in Height: 67.5 mm / 2.66 in Central Height: 38 mm / 1.50 in (Bottom to Center) Width: 52 mm / 2.0 in Material: 7075-T6 Aluminum Alloy Weight: 240 g / 8.46 oz Torque: 20-25 in /lbs (2.3-2.8 NA m) Mount: Picatinny Finish: Matte Black Items in the Package: T15 Torx Wrench