Versatile oxygen regulator. Forged brass bodies and bonnets for maximum strength. Sintered (heat-treated) metal inlet filter to trap impurities. Pressed, not soldered, joints for easy maintenance. Easy to read dual scale gauges with nearly unbreakable screw-on lenses. Includes a safety relief valve for safe operation. Included in Forney 01705 Shop Flame II and 01707 Deluxe Oxy-Acetylene Cutting/Welding Kits.