Warne Vapor Horizontal Picatinny-Style Aluminum Rings are designed, engineered and manufactured by Warne's expert staff in Tualatin, Oregon. Vapor Horizontal ring mounts are perfect for someone looking to purchase affordable US-made scope mounts for their centerfire or rimfire rifle. Available in 1 inch or 30mm, in heights of Low, Medium, and High, the Vapor line of mounts were developed and engineered to provide you with a strong and economical mounting solution that outperforms other mounts in their class. FeaturesStrong lightweight 6061 aluminum alloy with matte black finish Fits with all Warne Vapor and Maxima/Weaver 2 piece bases and Picatinny style rails Stanag 4694 interface allows for better return to zero and rigidity