Browning 12542 2 Piece 34mm High Burnt Bronze Cerakote Browning's Integrated Scope Mount System eliminates Alignment problems And The Possibility Of a Loose Connection Between The Base And Ring. The Ring And Base Become a Single, Ultra-Rigid Unit machined From 7000 Series Aluminum Alloy. The X-Lock Scope Mounting System That uses Four screws Per Base, replacing The Traditional Two-Screw System. Tube Diameter: 34mm Height: High Finish: Burnt Bronze Cerakote Style: 2 Piece Material: Aluminum