JIS F-2017 Panama Chocks Type AC
| NOMINAL DIAMETER | L (MM) | L1 (MM) | H1 (MM) | H2 (MM) | MASS (KG) |
| 310 | 310 | 708 | 639 | 541 | 253 |
| 360 | 360 | 760 | 640 | 542 | 289 |
| 400 | 400 | 804 | 642 | 545 | 323 |
| 450 | 450 | 856 | 643 | 547 | 351 |
| 500 | 500 | 908 | 644 | 549 | 395 |
| NOMINAL DIAMETER | L (MM) | L1 (MM) | H1 (MM) | H2 (MM) | MASS (KG) |
| 310 | 310 | 708 | 639 | 541 | 253 |
| 360 | 360 | 760 | 640 | 542 | 289 |
| 400 | 400 | 804 | 642 | 545 | 323 |
| 450 | 450 | 856 | 643 | 547 | 351 |
| 500 | 500 | 908 | 644 | 549 | 395 |