Everbilt 3/4 in. FHT x 1/4 in. O.D. Compression Brass Adapter Fitting 801789 - The Home Depot
4 Pack G 3/4 (BSP) Female Thread to US 3/4 NPT Male Thread Brass Pipe Fitting Adapter,G to NPT Adapter 3/4 Inch Converter Connector (3/4" BSP x 3/ 4" NPT) - Amazon.com