The Grandmaster spring loaded disc turns all 10 inch single head grinders into a serious planetary grinder
The Famous cub grinder "if used with water and capable vacuum system" can economically perform all concrete polishing jobs up to 200 metres square at comparable speeds as most larger machines, providing that it is kited out with
1/ A Grandmaster spring loaded disc [as shown] essential for removing marks and swirls.
2/ A Grandmaster KuB cup wheel adaptor plate so you can attach Grandmastertools jumbo cub wheels
Jumbo cub wheels last about 10 times longer than regular plates and work much better due to less friction for polishing concrete with this low powered grinder
1 x Cub Spring Plate - 6 x saddles and Jumbo Shoes - $946 each