Proflex Male Adapter | 1/2 in Male x 3/8 in Female | CSST570438392SKU:PFMF-1212Select Item:Price: $9.87Quantity: Proflex CSST Gas Pipe Manual 1/2" Proflex CSST Male Adapter Has 3/8" female threads inside the 1/2" male threads Used to join 1/2 CSST pipe to 1/2 female iron pipe or 3/8 male iron pipe. Reviews Choose your rating12345