スタビレー 1/4X1/2ソケットアダプター 410 STAHLWILLE | WORLD IMPORT TOOLS
Everbilt 1/4 in. OD Compression x 1/2 in. MIP Brass Adapter Fitting 800789 - The Home Depot
M14 Female To 1/2 Inch 1/4 Inch M10*1 Male Pressure Gauge Fittings,m20 Female To 1/2 Inch 1/4 Inch Male Pressure Gauge Adapter - Pipe Fittings - AliExpress