Aluminum Scope Rings (Weaver Style) - 1 Medium Matte BlackManufacture ID: A791DSAluminum scope rings for quick and easy mounting of a scope to your gun. Oversized locking screw allows you to securethe ring to the base easily.Specifications: -Tube diameter: 1-Height: Medium-Finish: Matte BlackFits Weaver style basesWarranty: Lifetimewarranty.