This 5/8 In. OD flare x 1/2 In. FIP gas connector shutoff valve has a forged brass body to eliminate the possibility of leaks associated with cast products. It is approved and design certified by CSA for use with natural, manufactured, mixed liquefied petroleum gases, and LP (liquefied petroleum gas) gas-air mixtures. WARNING: This product can expose you to chemicals including chromium which are known to the State of California to cause cancer birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov - Lead