Discraft says this about the Hawk: Discraft Stability Rating: D-Line 0.0; Z-Line 0.0
The Hawk is an excellent all-purpose midrange driver and is especially handy on tight fairways. A straight flier out of the box, it's a perfect first choice for new players.
About Z-Line Plastic
Most durable, truer flights, last 2-3 times longer.