SME Scope Leveler 34mm Scope Mount w/Hex Wrench for Mounting. Constructed with anodized aircraft aluminum alloy; High-visibility anti-cant device level indicator; Mounts quickly and easily on 34mm scope tubes; Helps keep your rifle perfectly vertical for accurate long range shooting and allows for the most precise shooting possible; The level will show if a shooter is canting to the left or right; This device installs on the tube of your scope; Hex wrench for mounting included Specifications for SME 34mm Rifle Scope Scope Leveler: Manufacturer: SME Objective Lens Diameter: 34 mm Condition: New Package Contents: SME 34mm Rifle Scope Scope Leveler SME SME-LVLSCP34: Scope Leveler 34mm Scope Mount w/Hex Wrench for Mounting