1/4-28 RH + LH Weld In Threaded Heim Joint Tube Adapter Bung for 1/2 Dia by .058 Wall Tube Completely CNC machined 1045 Steel Set of LH and RH Tube Adapters Thread: 1/4-28 O.D.: 1/2" Fits 1/2" tube with .058" wall thickness