Mastercool 96572 R404A, R407C, R507A, R134a 4-Way Alum. Refrigerant Manifold features a solid, extruded aluminum body, ball valve design for smooth flow, and an extra large sight glass. Mastercool 96572 also features silicone dampened 3-1/8" gauges and includes 3 1/4" SAE B-R-Y 72" hoses with B/Valves and one 3/8" SAE Black vacuum hose.