How to choose right shape trapezoid diamond tools for lavina grinder?

in order to get you the best possible grinding effect, please refer to below:

1. Use the rectangular segment tools for a more aggressive cut, and for noncementitious coating removal.
2. Use the round button tools for cementitious coating removal.
3. Use single segment tools with lighter machines (under 25-inch).
4. Use double segment tools with heavier machines - 25-inch and up.
5. For a more aggressive cut, use the single rectangular segment tools during the first grinding step on all machines (tool life can vary based on the concrete hardness).