These high tactical rings from Barska are the perfect addition to your optics inventory. Built-in Picatiny rail and see-through Picatiny base. Includes 2 rings, 1 detachable rail top, 1 standard top, and 1" inserts. Aluminum construction with black matte finish. Protected by Barska's Limited 1-Year Warranty. Height: 0.94". Diameter: 30mm.