Specifications:

Full metal construction.

Specially designed to convert 11mm rail base to 20mm rail base.

Also raising up the mount base level on any 11mm mount base.

11mm rail on both sides.

Increase the height of the flattop for easy aiming.

Adaptor is installed by wrench

Description:

 Length: 69mm

Weight(net):about 79g

Rail type: 20mm/11mm

Mount base:11mm

Elevation level: 20mm (base bottom to rail)

Package Includes:

 1 x Mount

1 x Allen Key