This set includes a custom adapter bolt swivel base designed for an exact fit, along with spacers to ensure proper alignment. It features a 3/4 inches rear swivel stud equipped with a spacer for enhanced stability. Additionally, the set comes with one pair of GT Locking Swivels, providing a secure and reliable attachment for your sling. This comprehensive kit is perfect for upgrading your firearm's sling setup, ensuring optimal performance and functionality.