Konus' Steel Ring Air Gun Set is constructed of a high quality steel and are ideal for mounting your riflescope. They are suitable for .22 rails and Airguns. This model has a 30mm diameter and a medium mount height.A complete assortment of high quality steel mounting rings for riflescopes. Suitable for 22 rails and airguns. Features: Durable steel construction Heavy-duty Torx screws Square recoil lug Medium profile Pair of steel mounting rings for riflescopes Recommended objective size of riflescope is up to 44 mm