This is the Replacement Tube Adapter for the Z1/Z2 Travel CPAP Machine, which connects the hose with the machine itself. This product only includes the adapter, and does not contain the hose, the machine, or any other product along with it.
With proper maintenance, this piece should last at least three months.
How often should I replace my adapter?
The adapter should work well for at least three months, and possibly much longer with regular maintenance.