ARKSEN A/C Manifold Gauge R410 R22 R134 R407C Set + 3CFM Rotary Vacuum Pump 1/3HP Easy to read 2-7/8" gauges feature 4 MPA Reading (R143a, R404a, R410a, R22) Color coded hoses help identify the hoses for added convenience Hose Connectors: 1/4" SAE; R410A Connectors: 5/16" SAE Direct drive motor allowing easy starting and is maintenance free Quickly and effectively removes moisture and air arom air conditioning system