SirShanksAlot Comments: Titleist recently tested their new D2 and D3 913 driver out with the USGA. These new drivers feature adjustability in shafts, a sole weight, and is available in both hands. The USGA tested a variety of lofts from 7.5 to 12 degrees. Looks like these beauties are still in development, and player testing has recently begun. We’ll keep an eye on these drivers and give you more details is they come in.