... , ES, PN, OT, KP, TR, FR Welding contact tip, material Cu-E / CuCrZrHR type: M5*18, M6*25, M6*28, M8*30TW ... -, 15HFC-, 15H-,14T-, 11T-, 13-...ES type: M6*27, M8*37, M6*30, M6*40TR type: 5/16'' UNC*34, 1/4 ... ''UNC*30FR type: M8*35, M10*1.25*40PN ... /OT type: M6*40, M6*45, M6*42 ...