Robinair 47150 Dual R12/134a Aluminum Manifold Set with 72" Hoses Aluminum manifolds for added durability and include sight glass R12/R134a gauges displays pounds per square inch and fahrenheit temperatures Rear R134a and 1/2 ACME fittings for holding hoses 72 inch R134a Hose Set (1/2 inch ACME x 14mm) 72 inch R12 hose set (1/2 inch ACME x 1/4 inch MFL)