| 3020-3021B DOUBLE LOCK CHAIN | |
| TYPE OF LINK | CHAIN LINK |
| MECHANISM | DOUBLE LOCK |
| MANUFACTURATION | RIVETED |
| KEY | STANDARD |
| MATERIAL | 6112 STEEL |
| WEIGHT | 266 GMS / 9 OZ |
| LENGTH | 223 MM / 8.78 IN |
| MINIMUM OPENING | 50 MM / 1.97 IN |
| MİNİMUM INSIDE PERIMETER | 150 MM / 5.90 IN |
| MAXİMUM INSIDE PERIMETER | 210 MM / 8.27 IN |
| LOCKING POSITIONS | 16 |
| FINISHED | NICKEL – BLACK OXID |