The Mastercool 2-Way Aluminum Manifold Gauge Sets 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 72" (183 cm) R410A standard hoses with 1/2-20 UNF fittings, 3 1/8" (80 mm) silicone dampened gauges for smooth needle movement, displaying R22, R404A and R410A refrigerants pressure and temperature correlations in PSI and ºF. (This unit has 1/2-20 UNF fittings)