https://www.high-tech-grinding.com/02-global-xingyi-floor-grinder/big-site-9-heads-concrete-polisher-machine.html
Big Site 9 Heads Concrete Polisher Machine
Features:
1.Three planetary heads and planet grind disc available for different abrasive,
2.Equip with heavy-dust aluminum alloy motor,not only in weight,but also strong power.
3.Convenient to handle by yourself.