Sunshade. Black Anodised.

Deep knife edge light baffles are machined in to the inner side walls which reduce reflections and improve image contrast compared to standard designs.
100mmm long. M62x0.75 thread. 69.0mm outside diameter.
Further machining reduces the weight to only 125g.
Fits -
Nikko Stirling Diamond MK3 10-50x60
Sightron SIII 10-50x60
Falcon X50 10-50x60