The Mastercool R410A, R22 & R404A Aluminum 3/8" Bore 3-Way Ball Valve Manifold Gauge Sets come complete and ready to work. With features like solid extruded aluminum body, large knobs, 3/8" ball valves, silicone dampened gauges that are easily re-calibrated in the field for increased accuracy and an extra large sight glass. Includes set of three 60" 1/4" SAE hoses with ball valves, one 60" 3/8" SAE vacuum hose and 90 degree swivel vacuum ball valve, 2 1/2" silicone dampened gauges for smooth needle movement, displaying R22, R404A and R410A refrigerants pressure and temperature correlations.