Rings built in forged steel and machining.
The QR mounts are dismantled and mounted quickly. The lever is turned forward and an eccentric on the axis of the lever hooks the base of the ring, pulling it down and forth on the base, ensuring it solidly in its "zero" position.
NOTE:Do not tighten the dicks of the QR mounts too much. With your hand it is enough (with your fingers). A tighter closure does not mean a more precise adjustment.
1.- 1 "/ 25.4mm. Ø