The flight numbers stand for:

to throw a disc where you want it to go

straight shots

Speed 9 / Glide 6 / Turn -2 / Fade 1

the Rhythm was designed to be either a great first driver or a line-shaping fairway driver for power arms

Halo Firebird Nummer:5 - 173-175g The flight numbers stand for:Speed 9 Glide 3 Turn 0 Fade 4 The Firebird is our most popular upwind distance driver. The Firebirds combination of superior speed and stability make it possible to throw drives into the wind with confidence. An excellent disc for throwing long range flex shots. A favorite of sidearm and overhead throwers, too. This disc is designed for professional level players.