One Pair 30mm Scope Mount Rings Optical Sight Bracket Dovetail Base 20MM Rail See Through High Heavy Duty

Size: As the picture shows.Manual measurement, please allow an error of ± 1-3MM.
Fits scope / laser / flashlight 30MM （Please refer to the picture）diameter.
Attachs to dovetail Weaver/picatinny 21MM （Please refer to the picture）rail.
Full metal construction.Color: Black .
Included in the Package: 2 X Scope Mount Rings .1 X Wrench.