The popular Weaver Grand Slam windage adjustable rings attach to weaver-style bases and provide additional Windage travel when sighting in a rifle. The 4-hole design adds gripping power to ensure maximum surface area contact to keep the optic zeroed even under extreme recoil. These solid steel rings feature the weaver cross-lock design and are proudly made in the U.S.A. NotesMounting hardware includedWindage adjustment tool included