Must be shipped to a physical address. We will not ship to P.O. boxes. * R1234YF Aluminum Gauge set * Set of 3 - 60" hoses (1 blue, 1 red, 1 yellow) * Sight glass allows you to see refrigerant going into the system * Includes vacuum pump adapter #3105. This eliminates the need for a new vacuum pump for 1234 systems. * 3" Gauge faces for easier viewing * Gauges are anti-flutter * High and low side screw down couplers