Burris rings have long been favorites of custom gunmakers because of thier solid strength, beauty and custom fit. Each ring is precision machined and finished to perfection. Each ring is machined and finished to perfection. Each ring is machined to exacting tolerances throughout manufacturing. Durability is crucial to accuracy. Burris warrants these rings to perform flawlessly forever.Specifications:- Signature Zee rings (Steel)- 30mm- High- Matte Black