Ring Mount Adapter Tube 90 Degree Offset Side for 20mm 7/8" Weaver Picatinny Rail Material: aluminum alloy Colour: Black Weight: 34g Product size: 6.5*2.54CM feature: Easy to install - can be securely installed on any standard 7/8" 20mm Weaver-Picatinny Rail For 1 inch diameter torches or lasers (lights or lasers not included) Made of CNC machined 6061 aircraft grade aluminum Great for rifles, shotguns, pistols Fits Weaver Picatinny rails application For use with 25.4mm/1" diameter torches or laser sights packing list: 1 * Rail Mount/ 1 * Wrench