Brand new Product description 4 Way AC Manifold Gauge Set for service home mini split unit or Central HVAC operates refrigerant R32 R404A R410A, or commercial walking cooler that has R22 refrigerant. Built with Heavy duty aluminum manifold body, durable and anti-corrosion. Through acrylic transparent sight window, you can see when the refrigerant start/stop charging and how fast. 4 valve knobs, blue for low pressure, red for high pressure, black for vacuum and yellow for charging. Double movement gauges, much more sensitive. 3" big dial with color coded scale for easy reading. Built in calibration screw and no-flutter pointer ensure measurement accuracy. Celsius unit. Double pressure measurement unit, psi and bar. Detailed refrigerant charging scale for R404A R134A R410A. R22 4 colors 5FT rubber nylon resin charging hoses, featured with anti-corrosion, low fluid resistance, high bearing pressure, ensure the durability and good air sealing. Build-in nylon strenthen the hose, increase stress resistance. Max working pressure is 800PSI and burst pressure is upto 4000PSI Red blue yellow hoses Each side is loaded with 1/4" female brass both end fittings for easy connection. The straight head fittings connect to AC refrigerant gauge, and the angle one for quick coupler or can tap. The black hose 1/4? female end and 5/16? female end 4 Way AC Manifold Gauge 4PCS 5FT Charging Hoses 5/16? ACME for mini split r410a Blow Molding Case