Adjustable drivers have been around for years, and lots of golfers like them because they allow you to tweak things like the loft, face angle, lie angle, and weight distribution. However, one of the biggest names in golf equipment, Callaway, hasn't offered one. Until now.

In late January, 2012, Callaway will release the Callaway RAZR Fit Driver
, which was quietly made available to tour pros during the PGA Tour's Fall Series. It's already found a home in Ernie Els and Phil Mickelson's bags.

"We wanted the adjustability to be easy for the consumer to use and to matter, so when a golfer makes a change we want him to be able to notice a change in the ball flight," says Luke Williams, Callaway Golf's global director of woods and irons.

Out of the box, the RAZR Fit will come with a neutral face angle, but using a torque wrench to unscrew the head from the shaft, and then re-attaching it in one of three different settings, lets you open the face 2.5° or close the face by 1.5°.

The Callaway RAZR Fit Driver comes with a 12-gram weight in the toe area and a 2-gram weight in the heel, but using the same torque wrench, the weights can be switched to increase the draw bias of the club.

In addition to being Callaway's first adjustable driver, the RAZR Fit is also the first driver to feature Callaway's newest face, which is dubbed "Speed Frame." It's an optimization of the hyperbolic face pattern than Callaway has been using for several years, but the company says it should help golfers maintain more ball speed when they hit outside of the sweet spot.

"The center of the face tends to be the hottest spot on a Callaway RAZR Fit Driver , and that's capped by the USGA," Williams says. "So what we want to do is make the areas around the center behave more like the center of the face."

The crown of the RAZR Fit is made from Forged Composite, a unique carbon material that first appeared in last season'sRAZR Hawk and Diablo Octane drivers. By melting millions of carbon fibers, Callaway engineers can press and mold the carbon material into very precise shapes and designs; in the case of the Callaway RAZR Fit Driver
, Forged Composite has been used in the crown to make it thinner and lighter. This allowed Callaway designers to add weight to the bottom and back sections of the club to lower the center of gravity.