Kaeser Compressors' UltraFill 99+ High-Purity Nitrogen Tire Inflation System offers high-purity and low input air requirements for a superior air to nitrogen ratio. Also, at 99.5 percent nitrogen delivery, UltraFill 99+ provides shorter filling cycle times and a higher nitrogen purity level in the tire. The system's fully automatic "auto-fill cart" frees-up mechanic time and improves accuracy.