Racetracks require your nitrous bottle to be vented to the outside of your race car ..do it with the ultimate in function and show stopping good looks. With ZEXs Pro Safety Blow-Down Kit, if your bottle is ever accidentally overfilled or over-heated and the pressure safety disk bursts, the dangerous over-pressure will safely vent to the outside of the vehicle. All racetracks require these safety blow down kits, so they are a must for the serious competitor. The ZEX Pro Safety Blow Down Kit takes quality and looks a step above the more commonly available metal tube style kits from other manufacturers. ZEXs kit fits all manufacturers valves and includes the correct bottle valve safety adapters, show polished AN fittings and 2 ft. of nylon braided no-scratch vent line. This is a complete kit that makes installing this important safety item a simple task. The part number for this item is Zex 82345.