Includes: Scope Ring Set, Screws Materials: 6061 Aircraft Grade Aluminum Finish: Type III Compatibility: 34mm Scope Tubes Weight: 6.5 oz Length: 0.85 in Width: 1.25 in Color: Black Warranty: Lifetime Line up your shot at the exact height you want it with the Monstrum Tactical Precision Scope Rings! Each set of scope rings is precision crafted to a given height specification. Choose the height that matches your particular rifle setup and preferred cheek weld. Your shot is lined up just where you want it every time. Mounts onto Picatinny rails. Not compatible with Weaver rails. The rings are milled from lightweight 6061 grade aluminum, with a heavy duty steel mounting mechanism for extreme tolerance.