There are mant types of clay blocks offered by Brilliatech. Typically, companies that specialize in automotive detailing products may offer different types of clay blocks based on their composition, intended use, and level of abrasiveness. Here are some general categories you might find:

1. Traditional Clay Bars: Made from natural clay, these bars are effective at removing embedded contaminants from the paint surface.

2. Synthetic Clay Bars: These are synthetic alternatives to traditional clay bars, designed to provide similar contaminant removal properties but with variations in durability and performance.

3. Fine Grade Clay Blocks: These are designed for lighter contaminants and are less aggressive on the paint surface, suitable for regular maintenance detailing.

4. Medium Grade Clay Blocks: These are more aggressive than fine grade blocks and are suitable for removing moderate contaminants from the paint surface.

5. Heavy Grade Clay Blocks: These are the most aggressive clay blocks, designed for heavily contaminated surfaces or for professional detailing purposes.

For specific types available from Brilliatech or any other manufacturer, it's best to check their product catalog or contact them directly for detailed information on their offerings. They can provide insights into the specific characteristics, uses, and benefits of each type of clay block they offer.