Material
The vast majority of shafts are made of steel or graphite. Graphite is newer than steel and is lighter while still being durable. Steel shafts vibrate more on impact, which can cause back and shoulder problems.
Flex
Flex is how well the shaft bends on a swing. In general, the stronger you are, the stiffer the shaft should be. Shaft manufacturers rate the flex of the clubs, but there is more than one rating system being used.
Length
The length of the shaft is determined by the type of club and its number. In general, a taller golfer would need longer shafts and vice versa.
Weight
The weight of the shaft is determined by its length and material. Steel is heavier than graphite. A heavier shaft can provide more power on a swing, but too much weight can slow the swing.
Torque
Torque is the amount of twisting the shaft will do in a swing. The more powerful a swing you have, the lower the torque of the shaft will need to be.
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.