The RAM-PF-585-12 is a 12" flexible metal pipe, with composite cover, that has a 1/4" NPSM male thread at both ends of the pipe.
NPT / NPSM Thread Statement:
There will be some binding of the threads due to the nature of the NPT / NPSM threads. The mount will be secure when tightened as fully as possible.
Metal with Composite Cover
Part number reflects product packaged in clear clam shell for store shelf display.