| Big Bertha. In the world of golf, this is a name | | | | Stainless Steel Irons introduced by Callaway and |
| that is synonymous with forgiveness, feel, and | | | | many believe it was this iron that set the |
| performance. Introduced by Callaway Golf in | | | | standard for high performance irons to follow. The |
| 1994, the Big Bertha Irons began a revolution with | | | | Steelhead X-14 Irons followed the X-12 in 2000 |
| an iron designed to push weight to the edge of | | | | and quickly became the best-selling Iron in |
| the club. This unique design became the | | | | Callaway history. Also offered in a Pro-Series, the |
| foundation upon which Callaway would continue to | | | | X-14 featured stainless steel construction and |
| improve, amazing us with each and every new | | | | Callaway's Variable Face Thickness (VFT) |
| model. In 1996, Callaway released an updated | | | | Technology that ensured a perfectly located |
| version of the original Big Bertha Irons with a few | | | | center of gravity (COG). Optimized in the long, |
| modifications. In the new model, designers used | | | | mid and the short iron, the Face Thickness |
| the size of the club head and the volume of the | | | | tapered from top to bottom and heel to toe. The |
| cavity to push weight farther out to the edges of | | | | Pro-Series designed for the advanced golfer was |
| the club head. A Bore-through hosel which actually | | | | designed with Less-Offset than the regular X-14 |
| extends through the club shaft providing more | | | | Callaway's original Big Bertha Irons were upgraded |
| stability and the feel that is expected of all | | | | once more in 2002. In this iron set, Callaway |
| Callaway products. The Sole was modified slightly | | | | added all of it's latest technologies which retaining |
| model to allow for the club to pass through poor | | | | the original and very popular appearance and |
| lies with even less friction than the before. | | | | shape the Big Bertha Irons were known for. |
| Callaway also introduced the Big Bertha Gold | | | | These technologies took the game of the golfer |
| Series Iron in 1996. Using the prototype of the | | | | using them to a whole new level with increased |
| original Big Bertha Iron, designers repositioned the | | | | forgiveness and maximum performance. Also |
| sweet spot, added a new contoured sole and | | | | introduced in 2002 was the Hawk Eye VFT Irons. |
| redistributed the weight in the head. The Big | | | | Quite simply, in this set, Callaway simply used all |
| Bertha Gold Series has a RCH Series 96 shaft and | | | | of their design knowledge and added the titanium |
| are manufactured from an aluminum bronze alloy | | | | package. The most popular addition to the Hawk |
| for a softer feel. The Gold Series Iron retained | | | | Eye VFT irons, however, was the internal weight |
| the original's 360-degree undercut channel and the | | | | pocket that allowed designers to position the |
| consistently thin face. The Great Big Bertha | | | | mass deep and low across the clubface. This |
| Tungsten Titanium Iron hit the course in 1997. In | | | | design provides for unequaled trajectory without |
| this design, Callaway used Titanium with a | | | | sacrificing forgiveness or feel. The following year, |
| Tungsten insert to create a club head that was | | | | Callaway went back to the drawing board to |
| perfect for use in just about all conditions. The | | | | create the new Steelhead X-16 and the Steelhead |
| Insert represents only 15 percent of the club | | | | X-16 Pro-Series. Changes included a shorter blade |
| head volume but accounts for 40 percent of the | | | | length and wider topline plus the addition of |
| weight, keeping the size perfect and the center | | | | Callaway's latest technology, Notch Weighting. The |
| of gravity exactly where it should be. | | | | X-16 features included a low center of gravity, a |
| The Big Bertha X-12 Irons and X-12 Pro Series | | | | cambered sole, and a satin finish. The Pro-Series |
| Irons followed in 1998. Featuring a lower center of | | | | were given a more blade-like design, Less-Offset, |
| gravity than the original Big Bertha Irons, the X-12 | | | | a thinner topline, narrower sole, and a straighter |
| was designed to help golfers get the ball airborne. | | | | leading edge. |
| The X-12's retained the 360-degree undercut | | | | In 2004 and 2006, Callaway added two more |
| channel, Callaway's patented S2H2 and Tru-Bore | | | | models to the original Big Bertha Irons as and in |
| Technologies. The Pro-Series was designed for | | | | 2005, introduced the X-18, the X-18 Pro-Series, |
| lower handicap golfers and featured the | | | | the X-Tour Irons and the Big Bertha Fusion Irons. |
| Less-Offset design which enables the more | | | | Proving once more than theirs is not a company |
| experienced golfer the ability to work the ball | | | | to rest on it's laurels. Known today as the leader |
| more easily. Also featured are the 360-degree | | | | and trendsetter in game improvement, Callaway |
| undercut channel, the S2H2 and Tru-Bore | | | | Golf continues to do it's best to make us better |
| Technologies. The X-12 Irons were the first | | | | on the course. |