GrovTec GTSW23, Wood Screw Forend Locking Swivel Set, Black Oxide Finish, Black, Includes (1) 1/2 and (1) 3/4 Wood Screw Sling Studs, (2) 1 GT Locking Swivels, (2) Spacers GTSW23 GrovTec's Locking Swivel Sets are just what you need in order to confidently mount your preferred sling to your favorite traditional rifle stock. This set includes 1/2" wood screw fore end swivel stud" 3/4" wood screw rear" spacers and a pair of GT Locking Swivels. Buy with confidence when choosing GrovTec.