Gouging torch is universally used for carbon electrodes. k-4000 1) Dia:5mm-8.5-16-19-25mm 2) Length: 300-305-355-400-455-510.. Gouging torch is universally used for carbon electrodes. Used for arc-air gouging carbon electrodes. Maximum current is 600A-1200A.K4000, K3000, k-5 (1250A) Gouging torch K4000 800A 1000A