Yellow Jacket® Manifold Gauge Set, 800 psi, -20 to 180 deg F, R-22, R-404A, R-410A Refrigerant, Aluminum, Blue/Red/Silver/Yellow, 60 in L

• Fourth hose enables connection to high/low sides, refrigerant tank and recovery unit or vacuum pump for diagnostics, evacuation and charging without switching hoses
• 3/8 in vacuum port for use with larger hose to cut evacuation time by upto 33% (all other fittings are 1/4 in)
• Large, easy-to-read 3-1/8 in steel case red and blue, 1% accuracy (class 1) gauge
• Front access for easy field recalibration
• Double O-ring piston for reliability and long service life
• Exclusive 100 mesh filter in-line on all flare fittings helps keep out particulate material and extend the life of the seats
• Contoured easy-grip handles for positive control, color-coded for ready identification
• Sight glass to easily view refrigerant movement and condition during charging and recovery
• Optional protective gauge boots available
• Heavy-duty hook won't pull-out