My full time employment is via American Golf, where one of my main roles is custom fitting customers for their new golf clubs. This is a vital process for anyone looking to upgrade their new set, or even purchase their first. As we all different with how we swing the club, it is extremely unlikely that another persons clubs will be the perfect set for you. It is much like visiting a tailor for a perfect suit, all your measurements are taken into account. Custom fitting golf clubs involves checking the following - 

• Height

• Wrist to floor measurement

• Swing speed (including shaft weight and feel)

• Launch angles

• Grip size