A test plug is included with each adapter purchase. This is a replacement.
A220 Leak Test Plug (one test plug is included with each adapter)
Falcon 8X Adapter Kit & SmartProbe Adapters
HondaJet HA-420 Accessories
Gulfstream G600 Adapter Kit & SmartProbe Adapters
Gulfstream 650 Adapter Kit & SmartProbe Adapters