1/2" Hose ID x 1/4" Hose ID Reducer Barb Mender/Splicer/Joiner/Union Fitting Brass Tubing Hose Adapter/Coupler 2pcs: Amazon.com: Industrial & Scientific
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. Hex Shank to 1/2 in. Socket Adapter at Tractor Supply Co.
1/2" NPT Male to 1/4" MFL Male Flare Adapter
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
Boeray 2pcs 1/2 Inch NPT Male to 1/4 Inch NPT Female Reducer Brass Pipe
30320 - Elkhart 30320 - 1/2" x 1/4" Copper x Male Adapter
DEWALT 1/4-in to 1/2-in Socket Adapter in the Socket Adapters department at Lowes.com
Adapter 1/2" to 1/4" E6.3, 3-piece, impact-resistant (628837000) | Metabo Power Tools