Lock-bodies are solid brass
Extra long-time for shackle-electroplating
Single-locking bolt
All internal pins / wheels are brass
Resettable codes
| Item | A | B | C | D | E | G | H | Wg | Wheel |
| MH520 | 21 | 30 | 20.8 | 3.2 | 8.8 | 10.5 | 54 | 49 | 3 |
| MH525 | 25 | 31 | 20.2 | 3.8 | 11.9 | 11 | 55 | 63 | 3 |
| MH530 | 30 | 31 | 21 | 4 | 16 | 11 | 56 | 77 | 3 |
| MH535 | 35 | 39.5 | 24 | 5 | 19.4 | 11.5 | 68.5 | 122 | 4 |
| MH540 | 40 | 39.5 | 26.5 | 5 | 24.7 | 12 | 71 | 145 | 4 |
| MH543 | 40 | 33.5 | 24 | 5 | 24.7 | 12 | 62.5 | 124 | 3 |
| MH550 | 50 | 46 | 34 | 6 | 31.5 | 14 | 86 | 250 | 4 |
