Detachable swivel Weaver/Picatinny mounting base Precision aircraft aluminum base with black anodizing Solid steel 1 1/4 loop for convenient sling attachment Tool-free ergonomic thumb nut with retention design Fits any Weaver/Picatinny rail Steel 1.3 oz Black * Attach a gun sling to your gun with the help of this UTG detachable swivel. The swivel has an aluminum mounting base that is compatible with any Weaver/Picatinny rail equipped gun. The swivel also has a solid steel 1 1/4 loop and a tool-free ergonomic thumb nut with retention design, Black.