GrovTec US 1.25in Ruger 10/22 Swivel Set Black. 44 mag and No. 3 carbines. 1/2in wood screw suitable for fore end stock mounting. Includes 3/4in rear wood screw swivel stud with spacers and two 1.25in Locking swivels. Perfect fit for Project appleseed rifle marksmanship courses. Specifications for GrovTec US 1.25in Ruger 10/22 Swivel Set: Manufacturer: GrovTec US Color: Black Gun Type: Rifle Gun Model: Ruger 10/22 Package Contents: GrovTec US 1.25in Ruger 10/22 Swivel Set GrovTec US GTSW313: 1.25in Ruger 10/22 Swivel Set Black