Sturdy 1'' scope ring mount for Picatinny/ Weaver Rail (21 mm).
Design in hollowed-out configuration between the ring and the bottom of the base, to release heavy duty when clamping your scope.
Built-in tape inside per rings to prevent from marring the scope, also prevent sliding and holding postion accurately.
The ring is for most scopes which are in 1''/ 25.4 mm scope tube. High profile, 0.98'' gap from base of mount to bottom of rings. ( Item height: 2.1'')
With only 1 rail clamp screw and 1 scope clamp screw per side, just twist off the nut and mount the base on the 20 mm rail easily.