Uncle Mike's UM Machine Screw Type Swivel with 1-inch Loop Size. The heavy-duty 1000 denier nylon construction with reinforced stitching can handle the rigors of continuous use. Specifications for Uncle Mike's Machine Screw Type QD-115 Swivels w/1in or 1.25 in Loops: Manufacturer: Uncle Mike's Color: Black Fabric/Material: Steel Features of UM Machine Screw Type Swivel QD 115: Has machine screw fore end base and wood screw rear base Replaces many factory non-detachable swivels Mounted on pistols rifles shotguns and muzzle loaders Package Contents: Uncle Mike's Machine Screw Type QD-115 Swivels w/1in or 1.25 in Loops Uncle Mike's MO10012: UM Machine Screw Type Swivel with 1-inch Loop Size