Mastercool 57272 R410A, R22, R404A Ball Valve 2-Way Refrigerant Manifold Set features a solid, extruded aluminum body, ball valve design for smooth flow, and an extra large sight glass. Mastercool 57272 also features silicone dampened 2-1/2" gauges and includes 3 1/4" SAE B-R-Y 72" hoses with B/Valves.