Transition coupling Application Chemicals Fitting Side A Connection Type Press-Fit Fitting Side B Connection Type Press-Fit Fitting Side A Copper Tube Size Not Applicable Fitting Side B Copper Tube Size 1 1/4 in Fitting Material Stainless Steel Fitting Side A Pipe Size 1 1/4 in Fitting Side B Pipe Size Not Applicable Material Grade 304 O-Ring Material FKM Specific Fitting Shape Coupling Fitting Side A Tube Outer Diameter 1 1/4 in Fitting Side B Tube Outer Diameter 1 1/4 in