The unique quick detachable design stops the metal swivel body from contacting the gun. The close machining tolerances provide smooth and silent operation. Super swivels do not include studs. All others include studs or barrel bands.Uncle Mike's has just the swivels you need for your Ruger 10/22, .44 Mag. and No. 3 Carbines with their Auto Single Shot Carbine 1 inches swivels. These swivels include the forend adapter that fits the barrel band on these Ruger rifles as wells as the woods screws for stock mounting. With these swivels you get the great quality you have come to expect from Uncle Mike's on your Ruger rifle. Features: Includes forend adapter Includes wood screws for stock mounting