The high-height matte black 4-Hole Tactical 30mm Picatinny Mounting Rings from Weaver are engineered to securely mount a 30mm riflescope to a Picatinny or Weaver rail. These rings clamp together using four Slip Torx screws that are designed for no-strip performance. Each pair of rings is machined from lightweight aerospace aluminum and is finished with hard coat anodizing for enhanced durability and corrosion-resistance.Provides adequate mounting height for most 30mm scopes with objective diameters greater than 44mm .Specifications:- Size: 30mm- Height: High- Finish: Matte Black