Digital Manifold Gauge, Number of Valves 4, Multiple Refrigerants, Number of Hoses 4, 60 in, 0 to 1000 psi, 29 in Hg to 800 psi, +/-0.5-1-2 Percent, 3/8 in, Aluminum, Calculates Superheat, Subcooling, Vapor and Liquid Saturation, Welded Stainless Steel Transducers, Universal K-Type Clamp Thermocouples, Easy to Navigate Transflective Display Menu, Protective Boot and Water- Design, Heavy-Duty Zeppelin(R) Design, Faster Evacuation with Quarter Turn Full Open/Close Handle