GENTEC Hand Cutting Torches are machined from high-quality forged brass. Model 363S have inline tubes arrangement and can be used with any type fuel gases, such as acetylene, propane, natural gas, propylene and MAPP, 2 PSIG and above. Balanced design and rugged construction is ideal for medium or heavy duty cutting and scraping operations. Model 363S-18-FA with flashback arrestor.