Hummer H1VIAIR 3-IN-1 AIR DOWN GUAGE

THIS IS A RAPID HANDS-FREE AIR DOWN GUAGE WITH EASY FINE TUNING. IT WILL AIR DOWN A 35X12.50 TIRE FROM 30PSI TO 15PSI IN 2 MIN.45SEC Air Down Time Begin/End PSI 31 X 10.5 30 to 15 PSI 1 Min. 55 Sec. 30 to 10 PSI 2 Min. 40 Sec. Begin/End PSI 33 X 12.5 30 to 15 PSI 2 Min. 30 Sec. 30 to 10 PSI 3 Min. 45 Sec. Begin/End PSI 35 X 12.5 30 to 15 PSI 2 Min. 45 Sec. 30 to 10 PSI 4 Min. 10 Sec.