【Package Includes】: Pex Fittings Set includes 2pcs 1" PEX Female Adapters 【Non-Pollution】: Pex 1" female threaded adapter Set is Lead free brass pex fittings, comply with drinking water standard. ASTM F1807 NSF/ANSI 61 Certified. 【Extra-Long Service Life】: High-quality brass 1" npt to 1" pex set resists corrosion, rust and high temperature (32℉—200℉). 【Applications】: 1" Pex fittings can be used for PEX pipes in plumbing jobs. For Pex Tubing. Great for hot or cold water distribution and and hydronic heating systems in your home, in warehouse or in RV. But NOT UPONOR/Wirsbo EXPANSION SYSTEM & PB TUBE. 【Compatible Products】: 1 inch Pex Fittings use with Stainless Steel Clamp Rings or PEX Crimp Copper Rings. (Clamp rings are not included in this set.) SUNGATOR