... : brass Size: 1/2", 3/4", 1", 1-1/4", 1-1/2" Body: forging O-ring: NBR Item: hose couplingMaterial: brassSize: 1/2", 3/4", 1", 1-1/4", 1-1/2"Body: forgingO-ring ... passed ISO9001:2000 in 2002. The complete product quality control system, stand flow work ensures fine stability of the product quality ...