Proflex Male Adapter | 3/4 in Male x 1/2 in Female | CSST570438394SKU:PFMF-3406Select Item:Price: $15.49Quantity: Proflex CSST Gas Pipe Manual 3/4" Proflex CSST Male Adapter 1/2 Female Has 1/2" Female threads inside the 3/4" male Used to join 3/4 CSST to 3/4 female pipe or 1/2 male pipe. Reviews Choose your rating12345