Here's what Prodigy Discs has to say about the F Model Understable:    

The F Model OS gives players a longer fairway driver that has a consistent, overstable finish. It appeals to all skill levels as it still offers a nice bit of glide, standing up to flat when thrown hard. It still offers that reliability and consistency players look for in an overstable disc with a strong finish at the end of its flight. It also has a tendency to skip at the end for some extra movement and utility in shot making.

F Model discs are a great introduction into "drivers". They're made for controlled, accurate shots at a long distance and have a smaller rim for a comfortable grip.

Speed: 10   Glide: 5   Turn: -2   Fade: 1