LONSEL Dovetail to Picatinny Rail Adapter 11mm Dovetail to 21mm Picatinny/Weaver Rail Convert Mount - Low Profile Scope Riser Rail Adaptor - Base Mount 3/8" to 7/8" Converter (1 Pack)

Precision Material: Premium out of aircraft grade aluminum alloy and black hard coat anodize finish, sturdy & durable. Convert 11 mm Dovetail to 21 mm Picatinny Rail: 2.94 inches length at the base, the picatinny rail extends 3.94 inches allowing for more flexible optics placement. Mount Base: Fit 11 mm dovetail mounts, Base mount 3/8" to 7/8" converter adapter. Low profile 0.59" riser rail for scope. Top With 9 Slots Weaver Style Rail: Top 21mm picatinny rail allows for the mounting of picatinny or weaver standard scopes, red dots or other accessories. Easy To Install: Rail adaptor installs easily via dovetail mount and one vertical stop pin, attached allen wrench can help you to tight stable and no shaking.