The men's left-handed Big Bertha Irons Stiff Flex 4-PW (7 Clubs) is a set of irons made by Callaway Golf. It is a part of the Big Bertha line of golf clubs and each club has a distinctive red Callaway logo on the back of the club head. The set is designed so the clubs have the best possible trajectories and there is consistent distance separation throughout the set. The 4-PW set includes seven clubs: a 4 i-brid, a 5 i-brid, a 6-iron, a 7-iron, an 8-iron, a 9-iron and a pitching wedge. The set is also available for right-handed golfers.
I-brids
I-brids are clubs that combine characteristics of irons and hybrid clubs. In the Big Bertha i-brids, they are designed to give you the accuracy and control of irons and the versatility, forgiveness and extra distance of hybrids. The i-brids have an extra-wide sole to improve their interaction with the turf and a slightly longer shaft for added distance.
Club Heads
The club heads on the Big Bertha irons have Callaway's Extreme Notch Weighting. This design redistributes the weight to the heel and the toe of the club head down low in the back. This is done to give you better distance and accuracy on mishits by giving the club a high Moment of Inertia.
Club Faces
Variable Face Thickness Technology (VFT) is used on each club face of the Big Bertha irons. The thickness of the face varies between 0.5 mm and 2.5 mm and this has the effect of lowering the center of gravity in the club head. In the mid to short irons, this provides an improved trajectory height. VFT gives the long irons a higher launch angle.
Hosels
The small joint that connects the club head to the shaft is called the hosel. The hosels in the Big Bertha irons are hollow, straight and short, which distributes the weight lower and closer to the perimeter of the club, where it is more useful. The Big Bertha irons hosels also are designed with Tru-Bore Technology. This allows the shaft to extend through the hosel and club head to the sole, which improves feel and control by moving the shaft tip nearer to the middle of the club face.
Shafts
Only graphite shafts are available with the stiff flex for the Big Bertha irons. The shafts vary in length from 35.5 inches on the pitching wedge to 39 inches on the 4 i-brid. The shafts have a low torque rating and a middle kickpoint.
Warranty
All Callaway Golf clubs are guaranteed against defects for two years from the date of purchase. Any defective golf club will be repaired or replaced by Callaway Golf. If the clubs were not purchased through an authorized Callaway Golf dealer, the warranty will not be honored.
About The Author
Darin McGilvra is a writer in Southern California. He has been a writer since 1997. He worked as a sports writer and copy editor for newspapers for more than 12 years before becoming a freelance writer. His articles have appeared recently in "The Californian" newspaper in Temecula, Calif. McGilvra holds a Bachelor of Arts in mathematics education from Northwest Nazarene College.
