Amazon.com : M MINGLE Garden Hose Adapter, 3/4 Inch GHT to 1/2 Inch NPT, Double Male and Female Brass Connector, with Extra 8 Washers : Patio, Lawn & Garden
Garden Hose Adapters | Pentair AES
1/2 in x 3/4 in Fitting Size, Male x Male, Garden Hose Adapter - 4KG81|4KG81 - Grainger