The Mastercool 89636-MG 2-Way Aluminum Manifold Gauge Set with 92cm Hoses with Manual Couplers and 63mm Gauges with Shock Resistant Gauge Protectors come complete and ready to work. With features like solid extruded aluminum body, large knobs, free-floating piston type valves, silicone dampened gauges that are easily re-calibrated in the field for increased accuracy. Includes set of three 92 cm hoses with manual couplers, 63 mm silicone dampened gauges for smooth needle movement with shock resistant gauge protectors, displaying R134a refrigerant pressure and temperature correlations (Metric).