Victron Dual terminal stud:
Victron's dual power distribution post is designed to connect electrical power runs, distribute power to separate locations, and to condense ground leads to a central location. They are rated up to 150 amps and can handle up to 70VDC.
Data sheet here:
https://www.victronenergy.com.au/upload/documents/Datasheet-Dual-terminal-stud-M8-EN.pdf
