Digital model with Rapid Response gauge shows immediate changes in pressure with supreme accuracy \n - Features new precision mechanical parts machined from brass for added durability \n - Attaches to air compressor to inflate tires in seconds \n - Gauge functional even when not connected to air compressor \n - Perfect for low pressure readings on fat and tubeless tires \n - Designed with a variable rate trigger and digital pressure gauge \n - Equipped with updated new PRO Presta head and also includes Quick-Clip Automotive Schrader head \n - Compatible with both Presta and Schrader valves \n - Safe for operation up to 255 PSI \n - Additional attachments sold separately