Ruff's Precision Manufacturing Delta precision cantilever mount 30mm, 34mm & 35mm options The Delta series was developed to cut weight, improve accuracy and look good doing it! 1.50" height to center of ring/optic Integrated recoil lug 30mm variant 5.5oz 34mm variant 5.8oz 6061-T6 aluminum ring body and cap 303 stainless steel cross bolt & nut (1/2") Alignment lug to ensure cap/base alignment during cap screw installation Proudly made in the USA Recommended torque values: Cap screws: 18in/lbs Cross bolt: 45in/lbs Weights: DC-30150: 5.7oz DC-34150: 5.8oz DC-35150: 5.8oz