Fits onto Weaver or Picatinny rails such as RAS, RIS rails.Rotatable sling stud built in is perfect for mounting Harris or smiliar bipods or attaching to sling swivels · Works great with Harris bipods or any other bipods that mount onto standard sling stud.Heavy duty alloy construction1.25" Loop Fits Slings up to 1.25" WideColor: Black FinishWeight: 0.9 ozSwivel rotates freely after plugged inWorks with Most Weapons with a QD Sling Swivel MountAllows for the Attachment of a Sling for Easy Transport of Your Rifle