The Nova Vista HP900 Fill Probe is perfect as a replacement or spare for the Nova Vista HP900 PCP air rifle. You simply cannot fill your rifle without this part, so it is always a good idea to have an extra, in case you lose yours.
Not compatible w/ the PS-Z model. Plugs into the filling port - just be sure to lubricate the O-rings first and press it in all the way with a turning motion. The turning motion will prevent the fill port cutting the seals. If you attempt to fill your rifle, but the pressurised air escapes out around the plugged-in filling probe, then the O-rings are faulty and should be replaced, not the entire filling probe.
The rear end of this probe is a male quick connect 1/4" fitting, so corresponds to the common female quick connect.
It comes supplied with the necessary O-rings to create a gas-tight seal.