| 型号 | d | D | ||
| mm | in. | mm | in. | |
| R20 | 31.75 | 11/4 | 57.15 | 21/4 | R22 | 34.925 | 13/8 | 63.5 | 21/2 |
| R24 | 38.1 | 11/2 | 66.675 | 25/8 | 1601 | 4.763 | 3/16 | 17.463 | 11/16 |
| 1602 | 6.35 | 1/4 | 17.463 | 11/16 | 1603 | 7.938 | 1/32 | 22.225 | 7/8 |
| 1604 | 9.525 | 3/8 | 22.225 | 7/8 | 1605 | 7.938 | 7/16 | 23.019 | 29/32 |
| 1606 | 9.525 | 3/8 | 23.019 | 29/32 | 1607 | 11.113 | 7/16 | 23.019 | 29/32 |
| 1614 | 9.525 | 3/8 | 28.575 | 9/8 | 1615 | 11.113 | 7/16 | 28.575 | 9/8 |