Amazon.com: Quickun Brass Hose Barb Reducer 1/2" to 1/4" Barbed Reducer Fitting Reducing Splicer Mender Union Adapter for Air Water Fuel : Industrial & Scientific
Charlotte Pipe 1/2 in. x 3/4 in. PVC Schedule 40 MPT x S Male Reducer Adapter PVC021100500HD - The Home Depot
3/8" to 1/4" 1/2 inch Drive Ratchet Converter Socket Adapter Reducer Air Imp GA | eBay
Orbit 1/2 in. x 3/4 in. MNPT Poly Adapter 37217 - The Home Depot
Buyers Products 2-in to 1-1/4-in Hitch Adapter with Corrosion-Resistant Zinc Plating - Easy Conversion, Durable Steel Construction in the Trailer Hitch Receivers department at Lowes.com
Yakamoz Quick Release 1/2-Inch Square Drive to 1/4-Inch Hex Female Socket Adapter Converter Chuck Adaptor for Impact and Ratchet Wrenches - Amazon.com
Parker - Industrial Pipe Adapter: 1/2″ Female Thread, 1-1/16-12 Male Thread, Male Straight Thread O-Ring x Female NPTF - 09107970 - MSC Industrial Supply
2-Inch X 1-1/4-Inch NPT Tank Adapter — GREAT PLAINS INDUSTRIES
DCA 2PCS 1/2 inch Square Drive to 1/4 inch Hex Female Socket Adapter Converter Chuck Adapter for Impact Air and Electric Wrench - Amazon.com
OEM Products 1/2 Inch Hose Barb By 1/4 Inch Male Pipe Thread Brass Adapter - Amazon.com
Grofry 1/4 inch NPT Male to 1/2 inch NPT Female Brass Pipe Fitting Reducer Adapter - Walmart.com
Ideal Vacuum | Adapter 1/4 inch hose barb to 1/2 inch ID Male NPT, Stainless Steel, Vacuum Fitting, Swagelok, SS-4-HC-1-8
SharkBite 1/4-in (3/8-in OD) Push-to-Connect x 1/2-in FNPT Female Adapter in the Push to Connect Fittings department at Lowes.com
Grofry 1/4 inch NPT Male to 1/2 inch NPT Female Brass Pipe Fitting Reducer Adapter - Walmart.com