CLOSED FLOW AIR CHUCK : The lock on air chuck enables the shutoff valve to shut down the air flow when the stem is not opened. The air only flows when you slide down the sleeve of chuck over the valve stem.

Brand: Preece Precision
Type: Lock On Air Chuck
Unit Type: Unit
Manufacturer Part Number: A61-2
MPN: A61-2
Country/Region of Manufacture: Unknown
Unit Quantity: 2