AIR CANISTER CAP
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Airbrush propellant cap with valve
Propellant can be bought in a canister, which is handy if a compressor isn't immediately available. This cap screws onto the canister to control the flow of air and to be able to shut it off when not in use.
The cap can be used to connect to either M5 or 1/8 BSP thread airbrush hose.