Check the listing for details. EFIELD 10 PCS Pex 3/4" X3/4" Straight Coupler Barb Crimp Brass Fitting,Lead Free. Condition: New. Listed at 12.99 USD. 10 pieces 3/4" PEX X 3/4" PEX Lead Free Couplings. These are lead free and certified to ANSI/NSF-61 Connection Systems Crimp 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.10 pieces 3/4" PEX X 3/4" PEX Lead Free Couplings. These are lead free and certified to ANSI/NSF-61 Connection Systems Crimp 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.