Masterforce® 3/8" Drive 1/2" SAE Impact Socket Adapter at Menards®
B&K 1/2-in x 1/8-in Threaded Male Adapter Bushing Fitting in the Brass Fittings department at Lowes.com
U.S. Solid 2pcs Brass Pipe Fitting Adapter, Male Pipe x Female Pipe, 1/2" x 1/2", 1/2" x 3/4", 1/4"x 1/4", 1/4" x 3/8", 1/8" x 1/4", 1/8" x 1/8", 3/8" x 3/8" -
Amazon.com: Legines Brass Bushing 1/2" NPT Male x 1/8" NPT Female Reducer Adapter Forged Pipe Fitting 1200psi (Pack of 2) : Industrial & Scientific
PARKER Reducing Adapter, Brass, 1/2 x 1/8 in - 1DFY8|8-2 RA-B - Grainger