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Pipe Fitting Adapter 1/2" Male x 3/4" Male Threaded Brass Nipple: Amazon.com: Industrial & Scientific
CRAFTSMAN 3/8" To 1/2" Socket Adapter, 1/2-Inch Drive, Female to Male (CMMT99222) - - Amazon.com
Adapter 1/2" Male x 1/2 “ Female Threaded Brass Construction NPT Pipe Fittings: Amazon.com: Industrial & Scientific
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Amazon.com: Tee Pipe Adapter 1/2" Female x 1/2" Male x1/2" Male T Adapter Brass Pipe Fitting Brass Tee Adapter 1/2x 1/2x1/2inch : Industrial & Scientific