All mounts are Type III Hardcoat Anodized matte black for a durable non-glare finish. Built to the 1913 Picatinny specification, Seekins Precision Scope Rings have a center lug machined directly into the bottom. This integral, flat recoil lug is far superior to cross bolt lug designs and fits precisely into Picatinny slots with minimal clearance. For maximum torque and strength, Grade 8 T-25 Torx® fasteners are used that will not strip out while being tightened to the appropriate specification.