This is a manual fire extinguisher which allows a soda stream co2 bottle to be connected to a XTool P2 laser cutter. (It can cater for the other XT lasers with the intake hole also)
 

It works out of the box - just screw a metal threaded Push-fit connector for 6mm air-hoses into the front hole.
To gain perfect results you may want to print the gaskets out of rubber-like material - or just replace it with standard gaskets of a hardware store