The Leupold rings are precision engineered to pair seamlessly with STD 1-piece or STD 2-piece bases, providing a secure and dependable mounting solution for your optic. The rear ring is secured by windage adjustment screws, allowing for precise alignment and improved sighting performance. Constructed from durable machined steel, these rings are built to withstand heavy recoil and harsh field conditions while maintaining a solid hold on your scope. Available in five different ring heights, they offer the versatility needed to achieve proper optic placement and eye relief for a wide range of rifle and scope configurations.