Coupling for Threaded Type
| GRBCO 12 | Threaded 1/2″ | 210 |
| GRBCO 58 | Threaded 5/8″ | 270 |
| GRBCO 34 | Threaded 3/4″ | 330 |
| GRBCO 1 | Threaded 1″ | 480 |
Coupling for Standard Type
| GRBCO 12NT | Rod Dia. = 1/2″ (12.7 mm) | 240 |
| GRBCO 58NT | Rod Dia. = 5/8″ (14.2 mm) | 330 |
| GRBCO 34NT | Rod Dia. = 3/4″ (17.2 mm) | 390 |
| GRBCO 1NT | Rod Dia. = 1″ (23.1 mm) | 600 |