These are closed flow air chucks so air will only flow freely through the chuck if attached to a tire valve with an installed core. Closed flow air chuck. Air will flow freely through the chuck if it is attached to a tire valve with an installed core.

Brand: TYK Industries
MPN: TYK773-2
Manufacturer Part Number: TYK773-2
Number of Items: 2
Material: Metal
Color: Silver
Size: 1/4 in NPT
Part Type: Shop Tool
Type: Shop Tool
Item Weight: 3 oz
Item Width: 1 in
Section Width (in.): 6
SKU: TYK773-2
UPC: 810120983943