Integration offers strength and consistency. Browning's T-Bolt Integrated Scope Mount System unitizes the ring and base into a single, ultra-rigid unit. Machined from 7000 series aluminum alloy. This eliminates alignment problems and the possibility of a loose connection between the base and ring. Fits only Browning T-Bolt rifles. Size 1" Ring Type 2-Piece Base/Rings Style 2 Piece Finish Matte Height 1.75" Series Scope Mount/Ring Combo Material 7000 Series Aluminum Lock Type Low Mount Type To Receiver Tube Diameter 1" One Or Two Piece Screw (4) Style Description Rifle