Description
| CODE | Dia Inch | Dia mm | Type | Thick mm | Concavity mm |
| JHD1603S | 16 | 410 | SMOOTH | 3 | 37 |
| JHD1603N | 16 | 410 | NOTCHED | 3 | 37 |
| JHD1803S | 18 | 460 | SMOOTH | 3 | 46 |
| JHD1803N | 18 | 460 | NOTCHED | 3 | 46 |
| JHD1835S | 18 | 460 | SMOOTH | 3.5 | 46 |
| JHD1835N | 18 | 460 | NOTCHED | 3.5 | 46 |
| JHD2035S | 20 | 510 | SMOOTH | 3.5 | 57 |
| JHD2035N | 20 | 510 | NOTCHED | 3.5 | 57 |
| JHD2245S | 22 | 560 | SMOOTH | 4.5 | 68 |
| JHD2245N | 22 | 560 | NOTCHED | 4.5 | 68 |
| JHD2206S | 22 | 560 | SMOOTH | 6 | 68 |
| JHD2206N | 22 | 560 | NOTCHED | 6 | 68 |
| JHD2445S | 24 | 610 | SMOOTH | 4.5 | 81 |
| JHD2445N | 24 | 610 | NOTCHED | 4.5 | 81 |
| JHD2406S | 24 | 610 | SMOOTH | 6 | 81 |
| JHD2406N | 24 | 610 | NOTCHED | 6 | 81 |
| JHD2605S | 26 | 660 | SMOOTH | 5 | 97 |
| JHD2605N | 26 | 660 | NOTCHED | 5 | 97 |
| JHD2606S | 26 | 660 | SMOOTH | 6 | 97 |
| JHD2606N | 26 | 660 | NOTCHED | 6 | 97 |
| JHD2806S | 28 | 712 | SMOOTH | 6 | 102 |
| JHD2806N | 28 | 712 | NOTCHED | 6 | 102 |
| JHD2808S | 28 | 712 | SMOOTH | 8 | 102 |
| JHD2808N | 28 | 712 | NOTCHED | 8 | 102 |
