| Product Name | Grit | For which Process |
|---|---|---|
| ①SANWA SHITAJI (POLISHING STONE) | #400 | Ground coating (the first) |
| ②SANWA SURUGA (POLISHING STONE) | #600 | Ground coating (the second) Before Middle coating |
| #800 | Middle coating (the first) | |
| #1000 | Middle coating (the second) Before Roiro finishing |
|
| #1500 | Roiro finishing (the first) | |
| #2000 | Roiro finishing (the second) | |
| ③SANWA ROIRO (POLISHING STONE) | #3000 | Roiro finishing (the third, fine finish) |
| #4000 | Roiro finishing (the fourth, very fine finish) |
| Product Name | Color | Grit | which Process |
|---|---|---|---|
| ④SANWA DOUZURI POWDER | White | Medium | Before Final polishing |
| Green | Fine | ||
| ⑤SANWA ROIRO POWDER | Brown | Very Fine | Final polishing |
| Cream | Very Fine |