Rings for optical tubes screw closure

Description

Rings for optical tube machined from a solid material Anticorodal fully CNC machine bar.

Double-coated surface finish

They differ from the quick closing rings due to the fact that the coupling and uncoupling of the optical tube is via two stainless steel screws instead of the handle.

They have the advantage of being more cost and overall dimensions reduced to a minimum without sacrificing the strength and the rigidity of older siblings with quick release.