1/2" O.D. COMP x 1/4" MIP Reducing Adapter Pipe Fitting, Lead Free Brass, Everflow, Mfr#: C68R-1214-NL$7.89+
#68 5/8 Inch x 3/4 Inch Lead-Free Brass Compression MIP Adapter, Thrifco Plumbing, Mfr#: 6968026$8.39+