Quick Connector Set, Regulator to Hose, Steel Brass, Fuel Oxygen, B Size 9 16 in 18 no checkout Versatile fastening tool offers user Versatile fastening tool offers user multiple fastening options in a single tool design Wrench has laser etched SAE MM scales and wide jaw opening Pass thru reversible ratcheting system works over long threaded rod where normal ratchets and sockets won’t fit Every pass thru socket replaces one standard and one deep Universal design fits 6 fastener types—hex triple flint and easy setup for welding and brazing applications Ensures pressure tight connections made in seconds Built in automatic reset check valves prevent reverse flow of gas by cutting off the gas under back pressure Oxygen and fuel gas models are not interchangeable in order to prevent wrong connections Color coded for fast