Flexible Rubber Joint, 20 Inch, 150 LB, NBR, One Ball Joint, Single Sphere Joint, Composed of Fabric Reinforced Rubber Parts and Lose Metal Flanges Name: Flexible Rubber Joint Size: 20 Inch Pressure: 150 LB Material: NBR Type: One Ball Joint, Single Sphere Joint Composed: Fabric Reinforced Rubber Parts and Lose Metal Flanges