Poseidon Cyklon HP Port Adapter
On older Poseidon Cyklon 1st stage SCUBA regulators, the standard thread size of all ports were 1/8. Today, all LP ports are 3/8 and all HP ports are 7/16 sized.
If you have an older style 1st stage, this adapter can be used to attach a standard High Pressure Hose.
- Male end: 1/8"
- Female end: 7/16"