The Eastman 5/8-IN OD gas fitting adapts to most range and boiler inlets. Flare fitting connects to the gas connector nut. Male fitting connects to the gas appliance inlet, gas ball valve, or gas supply stub out. Includes: (1) - 5/8-IN OD Flare x 3/4-IN FIP fitting. DO NOT APPLY THREAD SEALANT TO FLARED ENDS!