The Talley Scope Ring Set is engineered for precision and reliability offering a simplified mounting system that eliminates misalignment or loose connections commonly found in traditional two-piece designs. Constructed from lightweight aircraft-grade aluminum with a durable black anodized finish this scope ring set is fully CNC machined to the industry's tightest tolerances. With a tube diameter of 30mm and a height of .620 inches it provides a rigid and dependable mounting platform that requires no lapping and is ready for immediate use.