Welding contact tip, material Cu-E / CuCrZr Binzel type: M5*18, M6*25, M6*28, M8*30 Tweco type: 11-, 14-, 14H-, 15HFC-, 15H-,14T-, 11T-, 13-... Esab type: M6*27, M8*37, M6*30, M6*40 Tregaskiss type: 5/16'' UNC*34, 1/4''UNC*30 Fronius type: M8*35, M10*1.25*40 Panasonic/OTC type: M6*40, M6*45, M6*42, M6*70 1. with neutral packing , 50pcs/bag 2. with thermopack , 10pcs/box