Check the listing for details. EFEILD 25 PCS EFIELD 1/2" PEX X 1/2" FEMALE NPT ADAPTER BRASS CRIMP FITTINGS. Condition: New. Listed at 35.99 USD. 25 PIECES 1/2" PEX X 1/2" FEMALE NPT ADAPTER BRASS - CRIMP FITTING (LEAD FREE) Certified to ANSI/NSF-61 Compatible with all types and brands of PEX Tubing:Connection SystemsCrimp Connection System (PEX Crimp tool + Copper Crimp Rings)Clamp Connection System (PEX Clamp tool + Stainless Steel PEX Clamps)Design certified and agency listed.Compact, robust LEAD FREE brass body. Foundation of a strong, corrosion resistant, durable fitting.Design certified to ANSI/NSF-61 and ASSE 1061 product standard for use in potable water and hydronic heating water distribution.Approved to be used underground and behind walls without access panels.Designed for hydronic heating as well as potable water distribution.200 PSI25 PIECES 1/2" PEX X 1/2" FEMALE NPT ADAPTER BRASS - CRIMP FITTING (LEAD FREE) Certified to ANSI/NSF-61 Compatible with all types and brands of PEX Tubing:Connection SystemsCrimp Connection System (PEX Crimp tool + Copper Crimp Rings)Clamp Connection System (PEX Clamp tool + Stainless Steel PEX Clamps)Design certified and agency listed.Compact, robust LEAD FREE brass body. Foundation of a strong, corrosion resistant, durable fitting.Design certified to ANSI/NSF-61 and ASSE 1061 product standard for use in potable water and hydronic heating water distribution.Approved to be used underground and behind walls without access panels.Designed for hydronic heating as well as potable water distribution.200 PSI