T ADAPTER/BNC, all sides: female. 50 Ohms, brass material. 221988-1 pack of 100T ADAPTER/BNC, all sides: female. 50 Ohms, brass material.BNC Tee adapter.50 ohmsSilver-plated, beryllium copper center contactPTFE dielectricProduct CodesMfr Part No:221988-1CSA:FILE # LR7189ECCN:EAR99SC..