| Model | Configure |
|---|---|
| OPSH-20 | SH20 Female+PH20 Male Can connector 8-9mm the inside diameter of trachea |
| OPSH-30 | SH30 Female+PH30 Male Can connector 10-11mm the inside diameter of trachea |
| OPSH-40 | SH40 Female+PH40 Male Can connector 11-12mm the inside diameter of trachea |