Low Profile 11mm Dovetail to 20mm Picatinny Rail Mount Adapter Scope Base Mount
Bottom Dovetail Rail Width: 11mm. Top Picatinny Rail Width: 20 mm. Rail Type: Picatinny rail. Model Number: Picatinny. Type:Dovetail rail extension. Fit for 11mm rail. 1 x Allen Key. Guide Length:10"/25cm Guide.