PRODUCT FEATURES 30mm Dia., 0MOA Type, Fit Max 50-56mm Scope Objective Lens, 6 Screws Per Ring, 32mm 1.2in Bottom to Ring Center, Extremely Accurate with Full CNC Machined Hard Anodizing, 21mm Picatinny Mount w/ 3 Crossing Bolts & Anti-Retreat Rings Can Accept Max 45in / Pounds Torque Force for Big Nuts When Installing Mount on Picatinny Rail SPECIFICATIONS Diameter: 30mm Overall Length: 154m / 6.1in Overall Height: 59mm / 2.3in Mount Length: 154mm / 6.1in Ring Width: 45.5mm / 1.8in Central Height: 32mm / 1.2in, bottom to center Ring Length: 26mm / 1.0in Gap Length: 70mm / 2.8in Material: 6061-T6 aluminum alloy Weight: 230g / 8.5oz Mount: Picatinny Finish: Hard anodizing in black matte Screws per ring: 6 High-durability aluminum alloy in black matte, designed for high recoil calibers Do not use over 18 inch / pounds of torque on the scope rings&'; screws Suggest 25 inch / pounds (Can Accept Max 45 Inch / Pounds) torque force for big nuts when installing the mount on the picatinny rail With hex key and retail package SERVICES