uxcell 1/2 Inch Drive (F) x 1 Inch (M) Impact Socket Adapter for Ratchet Wrenches, Female to Male, Cr-Mo - - Amazon.com
POWERTEC - 4 Inch to 2-1/2 Inch Tapered Adapter Dust Collection Reducer Fitting | POWERTEC - Woodworking Tools & Accessories
1/2 in. CPVC-CTS Slip x FIPT Adapter Fitting C4703HD12 - The Home Depot
Brass Pipe Fittings, Water Hose Adapter, G 1/2 Female to G 3/8 Male Reducer Adapter, Compression Fitting for Kitchen Bathroom Faucet, Pipe Connector with Rubber Washer,(2 Pack) - - Amazon.com
Amazon.com: Brass Pipe Fitting Reducer Adapter G1/2" Female x NPT 1/2" Male Brass Pipe Fitting Reducer Thread Adapter, 1/2 Inch G Female x 1/2 Inch NPT Male 2 Pack (1 Pair) :
Brass Pipe Fitting 1/4 Inch Female Pipe 1/2 Inch Male Reducer Adapter Air Hose Adapter Metal Pipe Adapter 2 Pack - - Amazon.com