From the Manufacturer...
The XD has a low profile, thin rim which promotes a secure grip and an easy, natural release. These features combined with straight flight characteristics make the XD an easy to throw and control disc. It is the most driver-like putter we have and is useful for putts, drives and approach shots. Good disc for developing a “touch” around the basket.
Weight Range: DX: 165-175g
Best Choice for: Wooded approaches, Short to medium rollers, Beginners
Available Plastics: DX