Allen Pump and Semi-Auto Shotgun Sling Swivel Set Black. Made with a knurled threaded locking screw that holds the swivel securely on the sling swivel stud. The forged metal swivel design provides a quiet and solid foundation for anchoring Slings. Specifications for Allen Sling Swivel Set: Manufacturer: Allen Color: Black Fabric/Material: Steel Features of Allen Sling Swivel Set Pack Contains 2 Allen Magnum Swivels For Bolt Action Rifles Without Hardware Installed Fits Slings up to 1-inch Wide Designed to Work with Wood or Synthetic Stocks. Additional Threaded Screw and Nut are Included Package Contents: Allen Sling Swivel Set Allen 14430: Pump and Semi-Auto Shotgun Sling Swivel Set Black