ADAPTER: 1/8" MIPT X 3/8" BARB 316SS
Stainless Steel (old style was white plastic), ADAPTER:MPT1/8X3/8 BARB SS 316. Note that the fitting is reduced to a small diameter hole. ADAPTER MPT 1/8X3/8 BARB J315/J-325 and early model year J-300 collection spas.