Ultimate Arms Gear Two QD 1" Inch Slot Loop Rifle Swivel Full Band Centerfire for Mag Tube Diameter .645-.660" & Wood Screw For Winchester Models Set of 2 Steel Swivels 1" Wide + 1 Wood Screw Base for Buttstock + 1 Tube Clamp Swivel. Designed for Straps or Claws 1" Wide or Less. All Steel Construction, Black Finish. Super Heavy-Duty Swivels, Will Hold Up To Years Of Heavy Outdoor Use. Quick and Easy Installation. Full Band Mag Tube Diameters .645-.660" for Lever Action Rifles. Swivel Lock Spring-Loaded Plunger and a Knurled, Threaded Sleeve Eliminates Accidental Opening of the Swivel. Closed Link Technology Creates A Permanent Ring Bond.