5/16" Compression Union Ferrule (2) 5/16 replacement ferrules for S.U.R.&R.'s PS1000 Power Steering Line Repair Kit and PS2000 Power Steering Replacement Hose Kit..These ferrules allow you to downsize any of S.U.R.&R.'s power steering hose repair sections to 5/16 steel compression..No costly or difficult to use specialty tools.Use to make 5/16.On the car repairs made easy.Universal can be used to repair hundreds of different line types.Use for power steering lines clutch industrial and heavy duty applications PS810