It has a large .500” orifice for improved flow, with an AN-8 flare fitting, plus a big 5/8” siphon tube. It has a 1⁄4-turn activating handle that can easily be attached to a pull
cable that can be operated from outside the vehicle to shut off the supply of
nitrous in case of a fire. Another safety feature is a pressure relief with an AN-8
flare fitting that lets you run a line outside the driver’s compartment. Also
comes with two gauge ports. Indicate bottle size when ordering so siphon
tube can be made to correct length.