Oxygen Regulator Torch to Hose Adaptor 9/16″18RH to 3/8″24RH Size B A
Oxygen Regulator/Torch to Hose Adaptor - Size "B" 9/16"-18-RH to Size "A" 3/8"-24-RH. These adaptors are used to connect Regulators/Torches with "B" Size connectors to smaller Welding Hoses with "A" Size connectors.