FSA says it's a threaded headset. Someone just drew it up on the wrong template that was intended for threadless. Or they had a brain fart when the labeled it.

https://shop.fullspeedahead.com/en/h...ting/duron-x-1


Don't know how anyone can say that the seller is deceptive. The sellers title and other stuff say threaded. It's FSA's mistake apparently on the drawing that was likely provided by FSA.