1. oxygen-acetylene 2. oxygen-propane 3.brass 4.used for welding or cutting steel, and other gouging processing Welding torch and gouging ... gouging torchCutting torch features:1) GO2-250 used nozzles for British style cutting torches: ANM, PNM, ANME, PNME,AGNM, ASNM2) GO2-350 ... used nozzles for French style cutting torches: 10 / 10,16 / 10, 20 / 10, 25 / 10 ...