The Mastercool 2-Way Brass Manifold Gauge Sets come complete and ready to work. With features like heavy duty forged brass body, large metal handles, free-floating piston type valves, hose holder and silicone dampened gauges that are easily re-calibrated in the field for increased accuracy. Includes set of three 152 cm hoses without couplers. 63.5 mm silicone dampened gauges for smooth needle movement with shock resistant gauge protectors, displaying R134a refrigerant pressure and temperature correlations. Couplers are not included with this set. (Metric)