Lock-bodies are Laminated Steel
Cylinders are solid brass
Long-time for shackle-electroplating
Double-locking bolts
All pins are brass
with 2 pcs iron keys
| Item | A | B | C | E | G | D | H | F | Wg |
| QC30 | 31 | 26 | 17.5 | 14.5 | 20.5 | 5 | 49 | 17.5 | 90 |
| QC40 | 40 | 33 | 24 | 20.5 | 25 | 6 | 64 | 22.5 | 180 |
| QC50 | 50 | 38.5 | 27.5 | 24.5 | 28.5 | 8.8 | 75 | 26 | 300 |
| QC60 | 65 | 45 | 37.5 | 30 | 34.5 | 11 | 95 | 30.8 | 580 |
