Warne 1 inch permanently attached CZ 550 19mm dovetail medium riflescope rings are designed to be the strongest, most durable fixed scope rings system available. Typical steel rifle scope mounting rings in this class use only 2 screws per ring, have a narrower clamping band and in most cases only absorb recoil in the front ring. Maxima fixed scope rings utilize 4 T-15 torx style socket cap screws for secure riflescope optics mounting. The Maxima permanently attached Series fit Weaver style cross Slot bases and incorporate a Warne square stainless steel recoil control key in both the front and rear scope mounting rings..