This Brass T handle is a gas regulator adjusting screw designed for use with oxygen, nitrogen, and acetylene gases. The unit is sold individually and is a crucial accessory for welding and soldering equipment. The T handle allows for precise adjustments to the gas regulator, ensuring accurate measurements and efficient use of gases during industrial processes. Its durable brass construction makes it a reliable choice for various welding applications.please view the photos sells just like you see it.