Mame Swivel block (Double sheave)
| Size | Φ | A | B | C | D | E | L | SWL | BL |
| mm | mm | mm | mm | mm | mm | mm | mm | kgs | kgs |
| 250 | 5.00 | 27.80 | 10.00 | 27.00 | 17.00 | 13.00 | 49.00 | 238.00 | 950.00 |
| 320 | 6.00 | 37.00 | 9.30 | 35.00 | 20.00 | 15.00 | 60.00 | 238.00 | 950.00 |
| 500 | 8.00 | 51.30 | 15.20 | 54.00 | 26.00 | 20.90 | 85.00 | 700.00 | 2800.00 |
