For connecting 1/2" cross link polyethylene pex tubing to 1/2" male iron pipe thread pipe end or fitting. Secure barb end of fitting to pex pipe with model #UC953CP100 cinch clamps & model # 23081 cinch tool, or copper crimp rings & crimp tool. Immediately testable to well over 100 PSi. Meets the new NSF/ANSI standard 14-2009. ASTM F 1807-9SI standard for products intended for the transport of potable water. ANSI/NSF standard 61 Annex G for lead free compliance. The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight to meet AB1953 California & VT S152 Vermont low lead restrictions. 1/2" lead free brass barb insert x 1/2" female pipe thread adapter For connecting 1/2" cross link polyethylene pex tubing to 1/2" male iron pipe thread pipe end or fitting Secure barb end of fitting to pex pipe with model #UC953CP100 cinch clamps & model # 23081 cinch tool, or copper crimp rings & crimp tool Immediately testable to well over 100 PSI Meets the new NSF/ANSI standard 14-2009 ASTM F 1807-9SI standard for products intended for the transport of potable water ANSI/NSF standard 61 Annex G for lead free compliance The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight to meet AB1953 California & VT S152 Vermont low lead restrictions.