The Mastercool 57472 R410A, R22, R404A 3-Way Ball Valve Refrigerant Manifold Set features a solid, extruded aluminum body, ball valve design for smooth flow, and an extra large sight glass. The Mastercool 57472 also features silicone dampened 2-1/2" gauges and includes 3 1/4" SAE B-R-Y 72" hoses with B/Valves, 1 3/8" SAE Black vacuum hose and 90° Swivel vacuum B/Valve.