NIBCO 1/2-in Copper Threaded Adapter Fittings in the Copper Pipe & Fittings department at Lowes.com
Charlotte Pipe 2 in. x 1-1/2 in. PVC Schedule 40 MPT x S Male Reducer Adapter PVC021101600HD - The Home Depot
CRAFTSMAN 1/2-in to 3/4-in Socket Adapter in the Socket Adapters department at Lowes.com
CRAFTSMAN 1/2-in to 3/8-in Standard Socket Adapter in the Socket Adapters department at Lowes.com
1/2" FNPT X 1/2" BSPP Male Brass Adapter (NPT X BSPP)
Husky 1/2 in. Female to 3/8 in. Male Drive Adapter HADPTR1238 - The Home Depot
G Thread (Metric BSPP) Female to NPT Male Adapter - Lead Free (1/2" x – Cascada Showers
Parker - 7/8-14 x 1/2 Male Male Straight Thread O-Ring x Male NPTF 1" Hex Industrial Pipe Adapter - 72519135 - MSC Industrial Supply
Sump Pump Garden Hose Adapter 1-1/2" MIP X to 3/4" GHT Thread 1.5" to .75" inch | eBay
EEEkit 4-pack 3/8" to 1/4" 1/2 inch Socket Adapter Reducer Air Impact Set for Ratchet Handles, Extension Bars Accessories - Walmart.com
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
2" NPT Female Pipe x 1-1/2" NST (NH) Male Adapter – FireHoseSupply.com
Brass Pipe Fitting, SUNGATOR Adapter, 1/2-Inch Male Pipe x 1/2-Inch Female Pipe (2-Pack) - - Amazon.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
Amazon.com: Adapter Nipple 1/2" half inch male x1/2 inch male Threaded Brass Construction NPT Crossover : Industrial & Scientific
1/2-inch Screened Female Pipe Adapter to 7/8-inch Male for Water & Air Pipe | eBay
Ideal Vacuum | Adapter 1/2 inch hose barb to 3/8 inch ID Male NPT, Stainless Steel, Vacuum Fittings, Swagelok, SS-8-HC-1-6
Brass Pipe Fitting 1/4 Inch Female Pipe 1/2 Inch Male Reducer Adapter Air Hose Adapter Metal Pipe Adapter 2 Pack - - Amazon.com