This device is a pneumatic fitting PU Type, 10mm port, used for air flow.
This article is a cross shaped 4-Way PZA type pneumatic fitting with 4mm ports.
This is a plastic 4mm port 2-way PV series Elbow pneumatic fitting used for air flow.
This is a plastic 6mm port 2-way PV series Elbow pneumatic fitting used for air flow.
This is a plastic 8mm port 2-way PV series Elbow pneumatic fitting used for air flow.
This is a plastic 10mm port 2-way PV series Elbow pneumatic fitting used for air flow.