The XB 360⁰ copper coated prism is a designed for use with auto tracking robotic stations and precision monitoring systems.
It features dual top/bottom 1/4" threads for adapting poles to the prism.
The top thread is female, the bottom is male.

Optional 1/4" to 5/8" adapter avaiable for using the prism with tribrach stations and poles.
See https://www.accurate.kiwi/Product/adapter-sitepro-b-fc5/

Includes prsim bag.