Included is a Smith H1910C-540 oxygen regulator with a CGA-540 connection and a Smith H1945C-510 acetylene regulator with a CGA-510 connection. These regulators are new old stock and have never been used. I also have many other cutting and welding torches, tools and equipment listed if you are interested. Please feel free to ask any questions you may have and thanks for looking!!! The item "SMITH REGULATOR SET H1910C-540 Oxygen H1945C-510 Acetylene Cutting Welding Torch" is in sale since Friday, September 18, 2020.This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Welding & Soldering Equipment\Welding Equipment & Accessories\Welders, Cutters & Torches\Gas Welding Torches". The seller is "bulldog_equipment" and is located in Colbert, Georgia. This item can be shipped to United States.