Save thousands in nitrogen usage and labor savings per race over manual methods using our highly efficient and accurate nitrogen tire inflation / purging equipment. The NIflate99 Q500 equipment can purge and inflate up to 4 tires at once using cylinders of nitrogen. Simply connect the 4 hoses, set the desired pressure, and press Start. The machine will do all the work of purging and inflating each tire up to 5 times - in minutes!