Includes: Ruger 10/22 1" Scope Mount, Screws Materials: 6061 Aircraft Grade Aluminum Compatibility: Ruger 10/22 Rifle Weight: 1.2 oz Diameter: 1.0 inch Color: Black Warranty: Lifetime Dedicated dual ring scope mount compatible with the Ruger 10/22 platform. Scope mount installs directly to the Ruger 10/22 receiver via the factory mounting holes and included set screws with no additional hardware required. The mount will not install on platforms other than the Ruger 10/22.