Amazon.com: Horiznext NPT 1" male thread to 1 inch O.D. barb stainless steel pipe fitting, for connecting 1 inch I.D. air hose tubing, pack of 2 pcs : Industrial & Scientific
Hose Connectors, 2 Parts Brass Hose Tap Connectors 1/2 Inch 20mm to 3/4 Inch 25mm for Kitchen Sink Garden Washing Machine Fittings, Water Hose Pipe Tap Connector Female Threaded Faucet Adapter - Walmart.com
U.S. Pool Supply 1-1/4" or 1-1/2" Hose Coupling Connector Adapter — TCP Global
Gates 3/8, 1/2 Inch Hose Connector/Reducer 28609 | O'Reilly Auto Parts
Proline Series 3/4-in x 1/2-in Threaded Adapter Fitting in the Brass Fittings department at Lowes.com
LYUMO 1 inch Female Thread Quick Connection Hose Connector Water Pipe Adapter for Home Garden, Hose Adapter - Walmart.com