Frizzlife Brass NPT Thread Pipe Fitting Converter - 1/2 to 3/8 inch Comp Water Supply Angle Stop Valve Adapter for Reverse Osmosis Water Filters(3/8" Male to 1/2" Female and 1/2" Male to
DRIVE ADAPTER 3/8 INCH TO 1/2 INCH - ADJUSTABLE DIAL AND LOCK TORQUE WRENCH
Sunex 3300 3/8-Inch Female by 1/2-Inch Male Socket Adapter with Friction Ball Drive - Amazon.com
3/8" Compression x 1/2" Sweat Brass Adapter at Menards®