The Wheeler Delta Series Sporter Bi-Weaver Rings are your next go-to ring. These rings are constructed from 6061 aluminum. The offset 4-hole ring design keeps the scope locked in place, even atop some hard recoiling rifles. These rings feature a proprietary conversion for weaver or picatinny rail compatibility. Features:6061 Aluminum ConstructionMount to Weaver or Picatinny RailsLightweight and Durable