1 inch 30mm Scope Mount Features:Integrated Scope level ,Extra Pic Rail,The distance between the rings is 63mm (2.48 inches)The position marked( I )in the picture.
Mount Type:11mm 3/8" Dovetail and 20mm picatinny(Unscrew the Mount Screw and Adjust the Mount, for 20mm Picatinny or 11mm Dovetail)
Scope mount 1 inch 30mm Compatible with 1 inch 30mm Diameter Scope
Lightweight, made of aluminum with black anodized matte finish
1 inch 30mm Cantilever scope mount, with additional 20mm Pic Rail for attaching more accessories