30320 - Elkhart 30320 - 1/2" x 1/4" Copper x Male Adapter
Threaded Hose Adapter, 1-1/2'' Hose to 2-1/4'' Vacuum Intake| Rockler Woodworking and Hardware
Plumb Pak® 1-1/2" x 1-1/4" Plastic Reducing Tubing Adapter at Menards®
4pcs/lot 1/4 3/8 1/2 Drive Socket Adapter Converter Reducer Air Impact Socket Wrench Adapter Hand Tools Set - Wrench - AliExpress
DeWALT 1/4 in. Hex Shank to 1/2 in. Socket Adapter at Tractor Supply Co.
Charlotte Pipe 1-1/4 in. x 1-1/2 in. PVC Schedule 40 MPT x S Reducer Male Adapter PVC 02110 1100HD - The Home Depot
DEWALT 1/4-in to 1/2-in Socket Adapter in the Socket Adapters department at Lowes.com
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