NIBCO 1-1/2 x 1-1/4 in. PVC DWV Trap Adapter Fitting C480127HD112114 - The Home Depot
Reducer 1/2" Female to 1/4" Male Npt Pipe Adapter Male Female Thread Water Oil | eBay
Husky 1/2 in. Male x 1/4 in. Female NPT Coupler HDA30300AV - The Home Depot
Reducer 1/2" to 1/4" Npt Female Pipe Adapter Coupler Brass Fitting Water Oil Gas | eBay
Masterforce® 1/2" Drive 3/4" SAE Impact Socket Adapter at Menards®
Dust Fitting Adapter for Shop Vac 1-1/4 in to 2-1/4 in Diameter Hose - Walmart.com
Threading Adapter, NPT 1/2 Male to G 1/4 Female
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