คำอธิบาย
| Model | male X male (PT) |
| ST138x2 | 1/8″x1/8″ |
| ST138x4 | 1/4″x1/4″ |
| ST138x6 | 3/8″x3/8″ |
| ST138x8 | 1/2″x1/2″ |
| ST138x12 | 3/4″x3/4″ |
| ST138x16 | 1″x1″ |
| ST138x40 | 1 1/2″x1 1/2″ |
| ST138x50 | 2″x2″ |
| Model | male X male (PT) |
| ST138x2 | 1/8″x1/8″ |
| ST138x4 | 1/4″x1/4″ |
| ST138x6 | 3/8″x3/8″ |
| ST138x8 | 1/2″x1/2″ |
| ST138x12 | 3/4″x3/4″ |
| ST138x16 | 1″x1″ |
| ST138x40 | 1 1/2″x1 1/2″ |
| ST138x50 | 2″x2″ |