These OSHA compliant, oxygen-fuel, regulator-type, quick connectors offer automatic gas cut-off features to positively shut off the gas supply when disconnected. They are equipped with long-lasting stainless steel pin connections. Because quick connects allow for easier take down and storing of equipment, it can prevent theft. Constructed of durable brass and stainless steel for extended use and equipped with 9/16" -18 "B" connections. They meet OSHA 29CFR, 1926.350(f)(f) and ISO 7289 regulations.