REMOVE DOUBT. Is your rifle level? We make it easy. a "Bubble-on-bottom" design ensures a true level with your receiver a See the bubble without lifting your head from your rifle. Accuracy Our innovative ring is designed to provide real-time cant status without requiring you to lift your eye from the scope. With a quick glance using your non-dominant eye, you can easily read the bubble level and make the necessary adjustments for the most accurate shot possible. This allows for seamless and efficient shooting, enhancing your overall performance. Understanding the cant of your rifle is vital for precision shooting at long distances. Scope Mounting Precision Once our rings are properly mounted, you'll benefit from a co-linear bubble level that simplifies the leveling process by eliminating the need for multiple bubble levels across the platform. Simply level the rifle, level the scope, then secure the scope in place by torquing the cap hardware. This straightforward process enhances accuracy and streamlines setup, making it more efficient and user-friendly. 30mm precision riflescope ring set with built in co-linear bubble level. Built in level is visible from the shooting position with the shooters' non-dominant eye for quick reference prior to the shot. Level significantly aids in accurate scope mounting by giving reference to the cant of the rifle during the scope mounting process while eliminating the need for multiple small levels and balancing acts! 6061-T6 aluminum ring body and cap 303 stainless steel cross bolt & nut (1/2") Alignment lug to ensure cap/base alignment during cap screw installation Proudly made in the USA Recommended torque values: Cap screws: 18in/lbs Cross bolt: 45in/lbs