Camlock couplers information
| Nominal Size [Inch] | D1 mm (") | D2 mm (") |
| 3/4" | 32.4 (1.28) | 32.1 (1.26) |
| 1" | 37.3 (1.47) | 36.7 (1.44) |
| 1" 1/4 | 46.0 (1.81) | 45.5 (1.79) |
| 1" 1/2 | 54.0 (2.13) | 53.4 (2.10) |
| 2" | 63.8 (2.51) | 63.0 (2.48) |
| 3" | 92.2 (3.63) | 91.5 (3.60) |
| 4" | 120.3 (4.74) |
119.5 (4.70) |