EFIELD 1-1/4" C X C Copper Coupling With Rolled Stop Copper Plumbing Fittings with Sweat X Sweat Connection Works on Type M,L or K Copper Tubing, Use with 1-1/4 Inch Nominal Diameter Copper Pipe Copper Pipe Fittings Made of LF Copper NSF-61 Approved . Safe for Potable Drinking Water Copper Pressure Fittings are Manufactured to ASME B 16. 22 EFIELD 1-1/4" C X C Copper Coupling With Rolled Stop Copper Plumbing Fittings with Sweat X Sweat Connection Works on Type M,L or K Copper Tubing, Use with 1-1/4 Inch Nominal Diameter Copper Pipe Copper Pipe Fittings Made of LF Copper NSF-61 Approved . Safe for Potable Drinking Water Copper Pressure Fittings are Manufactured to ASME B 16. 22 For Residential, Commercial ,Plumbing, Potable Water And More