163L-36 Hand Cutting Torch is machined from high-quality forged brass for durability and stainless steel components for strength & long life and features the drop-in tube mixer design. Its balanced design and rugged construction are ideal for heavy duty cutting and scraping operations. The spiral mixer gives optimum mix of fuel & oxygen, the smooth oxygen valve provide precise oxygen flow control, and the round brass handle is ribbed for solid grip and operator comfort.