Introduction:
Golf shafts are used between the grip and the ?club head? golf shaft is circular in shape and some of the strongest and lightest materials are used to make the golf shaft. Graphite and tempered steels are used for the best strength. In 2006 the newest profiles that are 48GA approved and have ultimate strength are triangle golf shafts or some call the shaft trigraphite shafts.

Understanding shaft flex to improve your game:

To improve your golf game you need to understand the effect shaft flex has on your game. ?Flex? means the ability of a golf shaft to bend as forces are applied to it during the golf swing. The forces which are generated by the swing you have i.e. fast, slow, smooth or jerky. There are five generally used ratings for shafts flex.
?Extra stiff
?Stiff
?Regular
?Senior
?Ladies and Gentlemen:

When you have a flex that does not match your swing then in the clubface being misaligned at impact, it causes your shots to go off-target.

What role does flex play?

Shaft flexes impacts, either directly or indirectly, the accuracy, trajectory and distance of you shot. As the shaft flexes, so the position of the club head changes. The face of the club must be square at impact to get the most out of the shot. You will not be able to touch the ball if you have the wrong flex for your swing.

Guidelines:

?The degree of flex in your club shafts is something you decide to have stiffer shafts, or softer shafts, depending on your needs.
?When you are ready to hit the ball then take a look at the distance the ball has to travel.
?General: If you carry you driver 250 yards or more, go with stiff;
?Regular: 230-250 yards.
?Senior: 200-230 yard.
?Ladies: 200 yards or less
?Only the big hitters are going to need extra for most of us, extra stiff isn't seen on the picture.

Is your flex too stiff?

?The ball may tend to go to the right, or fade side, for right-handed golfers because with a too-stiff shaft the clubface is harder to square.
?The ball will fly lower and shorter for any given loft, compared to a properly fit shaft.
?The shot may feel less solid, more like a mis-hit even it you make contact on the center of the club face.

Isn't your flex too stiff?
?The Golf ball tends to go to the left, or to the draw side, for a right-handed golfer.
?The Golf ball might fly higher for any given loft, compared to a property fit shaft.
?Shots may tend to feel more solid, even when they aren't

The problem in hitting a shaft that is too flexible is much less than the harm in hitting a shaft that is too stiff. When you are unsure about flex, always err on the side of more flex. Mostly go with the regular.

Choose the best shaft-flex

You can visit a golf professional for a club fitting to choose the proper flex. The golf professional will take a lot of measurements, watch your swing, measure your swing speed, watch your ball flight and be able to recommend which flex is right for you. Club fitting are available at man pro shops and almost all golf schools and from teaching professionals.
When you find a flex with which you are comfortable. Then it is always suggestible to buy it. There is a good chance that it might be the right one.