Monstrum Precision V2 Scope Rings with Weaver Anti-Recoil Lugs 30 mm Diameter 1.00 inch Height. 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. Available in multiple center heights to match the needs of any shooter. Height is measured from the center of the rifle scope tube to the bottom plane of the mount. Available for both 30 mm and 34 mm scope tubes. Mount base mechanism comes equipped with custom Weaver locking bolts that slot seamlessly into Weaver platforms with zero wiggle - guaranteed to hold zero against the toughest of recoil. Also compatible with Picatinny bases. The torx locking screw system allows for quick yet powerful tightening while protecting from the screws from stripping. The rings are crafted from lightweight 6061 grade aluminum with a heavy duty steel mounting mechanism for extreme tolerance. All Monstrum products include a lifetime guarantee. Specifications for Monstrum Precision V2 30 mm Diameter Riflescope Rings w/ Weaver Anti-Recoil Lugs: Manufacturer: Monstrum Finish: Type III Anodized Base/Mount Type: Riflescope Ring Tube Diameter: 30 mm Ring Quantity: Pair Quantity: 2 Ring Type: Precision Scope Rings Fabric/Material: 6061 Aircraft Grade Aluminum Length: 12.1 - 17.9 mm Weight: 6.5 oz Color: Black Mount Type: Picatinny Package Contents: Monstrum Precision V2 30 mm Diameter Riflescope Rings w/ Weaver Anti-Recoil Lugs Monstrum ZS-3XWLB-P100: Precision V2 Scope Rings with Weaver Anti-Recoil Lugs 30 mm Diameter 1.00 inch Height