Deluxe Tactical Rings to Provide Solid Housing for any 1" Tube Scope Unique Horizontal Ring Assembly to Guarantee Complete Fit and Levelness Creative Deflectable Leaf Design to Achieve Total Stability and Easy Adjustment of Scope in Ring Housing Ideal Height, Length and Spacing of Picatinny Tri-rails to Accommodate Most Versatile Applications Great Add-ons for All markers with top Picatinny/Weaver Rails Specifications 1" diameter 18mm width