For beginning use in astronomy to attach Nikon 10x50 to Manfrotto pan head. Okay for casual use, but screw to attach to pan head requires effort to get it tight enough to keep from slipping when viewing if you torque the binoculars. Nice that it fits into center focus on Nikons. For extended use, get a more substantial attachment.
Pros: Well made, high quality
Cons: Foot attachment diffiuclt to get best grip.
This review was written in the old system and had content requirements that are different than reviews written today.