Warne Scope Rings are the strongest, most durable fixed mounting systems you can buy! Mount your scope the right way. These Warne Fixed Rings use a secure Torx-style socket clamp for a secure mounting,are wider to hold your scope firmly in place and use a the square recoil key to ensure a maximum bearing surface to the receiving bases. The recoil key in the front and rear rings ensures a no-slip recoil surface for a secure hold. Designed to fit Warne bases, all Weaver cross slot and mil-spec Picatinny-style bases and rails. A "no-slip" positive recoil surface about base withstands heavy recoil Square recoil control key allows protection against swaging and peening 4 Torx-style T-15 socket cap screws provide a secure mount Low: .25"h., fits 24-42mm objective, 4.6 oz. Medium: .375"h., fits 42-52mm objective, 5.3 oz. High: .525"h., fits 50-56mm objective, 6.2 oz. Order today!